When Gilbert writes two not-so-nice valentines to his classmates, his prank quickly turns into pandemonium. But there's always time for a change of heart on Valentine's Day.

Mother Possum is in despair because her son cannot learn to play dead without laughing.

"For Owly and Wormy, nothing beats the power of friendship! But fear can be a powerful force, too. There's a new visitor to the forest, an opossum who's misunderstood because of the way he looks. Wormy is afraid of him, and when Owly tries to untangle him from a fence, Possey begins hissing and bares his sharp teeth...Can the trio be brave and face their fears with just a little courage and a lot of friendship?"--

Gilbert seems to be the only one in his class who cannot think of any ideas for an Earth Day project.