Marley has two new friends in the house-the new kittens, Lucky and Yow-Yow! As the king of the castle, Marley enjoys showing the kittens a few life lessons. Marley shows the kittens where to wait for Cassie to come home from school and where not to sniff, like Baby Louie's diaper! The kittens show Marley a few things, too, like how to pounce and how to scratch. But when Marley is scared by a thunderstorm, he may find that he doesn't know everything just yet. Will the kittens have one more important lesson to show their pal Marley?