As you might know, Kirby is pink fluffy thing that can swallow things whole. What you might not know, King Dedede, who is a big jerk that hates Kirby, HELPS Kirby in Kirby's return to Dream Land. Plus, in this game he is..........<dramatically> playable. Another thing you should know, in Kirby: Right back at Ya!, Meta Knight, who follows a code of honer to the point where you would expect him not to watch TV or use modern day technology, was seen watching <dramatically> TV. Also, Meta Knight's face looks <dramatically> almost identical to Kirby's face (only differences are eyes are yellow and skin is blue).
Here's the story for Kirby's Epic Yarn.
"Yin-Yarn the sorcerer runs amok in Dream Land, turning everything, citizens included, into yarn. Meanwhile, Kirby walks by a bush and notices a tomato with an M on top of it. Thinking it to be a Maxim Tomato, he starts to inhale to eat it just as Yin-Yarn appears and starts to introduce himself. Yin-Yarn gets angry at Kirby eating the tomato, and sucks him into a sock tied with a string around his neck.
Kirby finds himself in a strange land, where everything is made of yarn - and due to the sorcerer's magic, himself as well. Just then, he saw a yarn monster chasing a yarn boy. Kirby tries to inhale the monster, but the air goes right through his body. Unsure of what to do, but still wanting to help, Kirby transforms into a car and drives off with the yarn boy. It turns out that Yin-Yarn's tomato was a Metamato, and from eating it, Kirby can now transform into different things at will. The boy introduces himself as Prince Fluff, and offers Kirby to go over to Patch Castle, which teaches Kirby the basics of Patch Land.
Right after that, a monster appears and tries to eat Prince Fluff. Kirby defeats the monster by using his weight form and obtains a piece of yarn that stitches Quilty Square to Grass Land. As a dismayed Prince Fluff explains, Yin-Yarn split Patch Land into seven parts, and he still has five missing pieces to find. Being his helpful self, Kirby promises his help to make Patch Land a peaceful place once again, and the two set off on their adventure. After defeating Fangora in Grass Land, a magic yarn stitches Grass Land to Hot Land.
Interlude: Eventually Kirby's stomach starts growling, so he searches for food in a tree, but cannot seem to find any. Suddenly, the tree starts to shake, and Kirby tries to hang on for as long as he can. It's actually Prince Fluff shaking the tree and he says this is the way to get food in Patch Land, and proceeds to shake several apples and Kirby out of the tree. Kirby gets mad and chases Prince Fluff for so long that he forgot he was hungry.
After defeating Hot Wings in Hot Land, Kirby and Prince Fluff find the magic yarn that stitches Hot Land and Treat Land together.
Meanwhile, back in Dream Land, a group of Waddle Dees are working for King Dedede inside the castle. King Dedede notices that one of the Waddle Dees, being made out of yarn, "looks a little strange", but he ignores this. Yin-Yarn, hiding behind some boxes, continues to sew more yarn Waddle Dees with his needles. Yin-Yarn cackles, saying that Dream Land will be his soon enough, although he confesses that he is not sure what to do with it.
After defeating Squashini, Kirby and Fluff find the magic yarn that stitches Treat Land to Water Land.
Interlude: Along their journey, they come upon a breathtaking, mountain-sized cake! Kirby tries to contain himself, but jumps into the cake nonetheless. Prince Fluff declares a cake-eating contest and starts eating as well. However, they don't balance their eating, and the cake collapses with them inside. Prince Fluff pops out and says he can't eat anymore. Kirby pops out with a gigantic cherry in his mouth and eats it, winning the contest.
After they defeat Capamari, the magic yarn stitches Water Land to Snow Land.
Back in Dream Land, Yin-Yarn's Waddle Dee impostors capture the real Waddle Dees and corner Dedede. Before he can defend himself, they attack and tie him up. Yin-Yarn comes out and uses his sock to suck Dedede away into Patch Land and transform him into yarn. While he wanders Snow Land, he sees Kirby and starts to run over, but a puppeteer's device comes in from out of nowhere and knocks him unconscious, then takes control of his body. When he is defeated by Kirby, he returns to normal and the magic yarn from the puppeteer's device is relinquished, and stitches Snow Land to Space Land.
Once again, back in Dream Land, while roaming the skies on Battleship Halberd, Meta Knight notices some changes in Dream Land's landscape. Suddenly, Yin-Yarn crashes onto the deck and sucks him into Patch Land. When Kirby and Prince Fluff find him guarding Space Land's magic yarn, his eyes flash between yellow and purple, as he is under Yin-Yarn's possession. Once Kirby defeats him, he is freed, and promptly disappears into his cape, while Kirby and Fluff get the last piece of magic yarn, which stitches Patch Land fully back together. They head back to Patch Castle to celebrate, but are interrupted when an unconscious Meta Knight wakes up. He apologizes for attacking them and blames the yarn, and explains what is happening in Dream Land. Kirby is upset that Yin-Yarn is taking over, but Prince Fluff pulls out another magical sock. It turns out that Yin-Yarn had only stolen one of the pair, and now that Patch Land is restored, the sock should regain its normal magic.
Kirby, Prince Fluff, Meta Knight, and King Dedede use the sock to transport to Yin-Yarn and confront him; upon their arrival at Dream Land, they find that Yin-Yarn has discarded his sock and Dream Land is covered with yarn and fabric, with Castle Dedede now floating ominously overhead. Kirby and Prince Fluff eventually track down Yin-Yarn and defeat him; however, his knitting needles come to life and use the magic yarn to give a new spin on him as Mega Yin-Yarn. Thinking fast, Meta Knight flies over and drops a Tankbot metamortex, and Kirby powers up and decimates Mega Yin-Yarn. His knitting needles are banished to the far reaches of Patch Land, and the yarn spell soon wears off, with Kirby and Dream Land returning to normal. Prince Fluff says farewell to Kirby and leaves that magical sock for Kirby to come visit whenever he wants. After the credits roll, Kirby is shown sleeping in a field with the sock in his hands, dreaming of his new friends in Patch Land."
Here's the story for Kirby Mass Attack!.
"Kirby starts out at Green Grounds, where Daroach approaches him in an airship and offers his help. He asks Kirby to collect Medals, which he claims to have a magical power to dispel the magical darkness surrounding Necrodeus' stronghold, which makes it impossible to approach.
And so, Kirby journeys throughout Pop Star, into Sandy Canyon, Dedede Resort, and then into Volcano Valley, where he finally gets enough of those Medals, which fires a great beam of light to dispel the darkness around Necrodeus' stronghold and opens up the fifth and final world, Necro Nebula.
The Kirbys finally defeated Necrodeus -- thanks to the heroic heart that had guided them every step of the way! Necrodeus faded into oblivion, leaving his staff floating in space. The heroic heart called out to the Kirbys...
"Now! Everyone, grab the staff! Use its magic!"
The Kirbys... became one whole Kirby again! A Warp Star soared into view and picked up Kirby! As Kirby flew home, he looked out across the cosmos. The stars were so beautiful. Darkness had its place just as much as light, he thought. For the stars sparkled twice as bright in the dark depths of space!
As Kirby soared onward, he saw Pop star in all its glory! Pop star had never looked so wonderful. It shone like a brilliant beacon of hope. Kirby left the darkness of space behind, glad to be home at long last."
Here's the story for Kirby's return to Dream Land.
"The game's trailer at E3 2011 reveals part of the introduction, and the rest are revealed at Comic Con. King Dedede and Waddle Dee are chasing Kirby, who is holding a large piece of cake resembling his Strawberry Shortcake from Kirby: Squeak Squad. They run past Meta Knight, who is lounging and reading a book under the sun by a large piece of rock on a grassy knoll. Suddenly, the sky flashes brightly and a five-pointed star-shaped portal reminiscent of Dark Nebula opens in the sky, and a crystalline, galleon-shaped, futuristic airship with an unfamiliar insignia pops out, trailing smoke and spilling pieces of gears everywhere. Moments after, the ship falls apart - first two banks of oars, then wings at its aft, then its engines and a piece of its bow, and finally its top mast. What's left of the hull crashes nearby, and the four heroes run off to investigate (Kirby abandons his dropped cake).
They reach the crash site and find the ship's hull mostly intact. Then its door opens. Kirby peers intently inside.
The heroes wander into the ship's shiny interior and find themselves right inside the ship's cockpit, but it's in shambles after the crash. A lone alien lies on its side, unconscious in front of a large screen flashing a warning sign.
The alien wakes up and immediately runs to the control panel, and a look of despair comes over him. The screen shows all 120 pieces of gears missing, and all five parts of the ship's hull had been scattered to the five corners of Pop Star.
Kirby offers to help, and the rest join in. The four heroes run off the ship while the alien stays behind on the ship to do repairs. What caused the ship to crash in the first place?
The alien is later introduced as Magolor, and his ship is the Lor Starcutter.
Leading up to the game title screen, a short cutscene plays that isn't exactly relevant to the story. After the HAL Laboratory sign shows, Kirby zooms by on his Warp Star. He passes King Dedede flying through the air, then flies into him. Dedede ends up on the Warp Star and gives Kirby a slightly annoyed look. As the two soar through the sky, Waddle Dee comes flying through the air as if shot out of a cannon, landing on the Warp Star as well. As the three nod at each other, Meta Knight flies by. Kirby, King Dedede, and Waddle Dee wave at Meta Knight, who soon joins them. Now together, the four give a silent "Yeah!" and the fly into the distance."
Here's a gallery.