Mikey has trouble finding an apartment and, going with Ozu's advice, moves in with Lily and Mitsuki. At the same time, Guano and Gonard have trouble on the set.
Ozu decides to take a vacation- his first in several decades. Before going, he reads off a long list of rules- most importantly, not to harm his prized 500-year-old Bonsai tree. Of course, even before he reads this, Mikey accidentally sets the tree aflame. Now, Mikey and most of the gang (excluding Lily, who is their temporary boss, and doing all she can to keep them busy) must work to replace the Bonsai before Ozu gets back from his unusually short vacation.
Mikey throws away Mitsuki's treasured photo album after learning the joys of recycling. Eventually, Mikey recovers it only to discover that all the photos have been removed. Now he must somehow get them back... or create new ones in hopes of fooling Mitsuki. Meanwhile, Gonard and Lily are thrown into a relationship by Ozu to stir up publicity, only to have Guano interfere and make a love triangle. Who will win Lily's heart? Will it be Guano or Gonard? Only a duel can solve this!
When Mikey’s irresponsible spending causes him to go into debt, he must go into business with Gonard to bail himself out. When the lemonade business sours the two find themselves in debtors’ prison. Lily and Mitsuki must rescue Guano after he is mistaken for a toy by two greedy boys at the mall.
Mikey finds a cute little kitten and adopts him as a way to gain more popularity. The plan backfires and the entire media forgets about Mikey and focuses on the cat who becomes Japan's newest star and costs the LilyMu cast their jobs. Trying to get rid of the cat, Mikey hires a cat burgler, one that eats cats. Meanwhile, Ozu's plans to open a LilyMu superstore run short when he adopts the cat away from Mikey and fires the LilyMu cast. The LilyMu superstore is now changed to the a Kello the Kitten store.
After not being able to lift a prob while on set, Mikey decides to go to a gym and get stronger. A sumo named Yokuzuna becomes Mikey's newest rival and a mysterious trainer helps Mikey in defeating him. On a tennis court, Gonard is working on his game until he is embarrassingly defeated by the ball machine. When the rest of the cast asks what happened, he describes an assailant that sounds exactly like the ball machine.
When the gang goes to Mount LilyMu, everyone but Mitsuki can go on the bullet train, since Mikey cannot find Mitsuki's ticket. On the train, Mikey hears mumbles and finds Mitsuki tied up. Mikey convinces the gang to help find Mitsuki, and whoever kidnapped Mitsuki. In the subplot, Yes Man quits after a fight with Ozu.
Mikey gets lost in Yoyogi Park and meets a Werepuff, a monster who eats peoples' clothes, and Mikey turns into one when his pants are eaten off. Lily feels suddenly attracted to him, and they soon become a celebrity couple. The only way to cure him is if he eats the fur of the original Werepuff before dawn.