A festive follow-up to There's a Bear on My Chair and There's a Mouse in My House Bear and Mouse have finally overcome their differences and are living together in perfect harmony . until it's time to decorate the Christmas tree! Bear wants dazzling lights, while Mouse prefers gigantic ornaments. Did Mouse just put a manatee on the top of the tree? After Bear attempts an upside-down tree, it looks as if Christmas might be ruined for the pair. But maybe, just maybe, Bear and Mouse can reach a compromise in the spirit of the season.