Pinky learns the importance of identity as he defends his favorite color, pink, and his friendship with a girl, Rex, from the neighborhood bully.

Rex and Pinky, each having 27 stuffed animals, find their visit to the museum and its gift shop complicated by Pinky's little sister Amanda.

Determined to be a good big sister, Rex starts spending all her time with the baby her family has adopted, making her neighbor Pinky fear that he has lost her friendship.

Rex and her best friend Pinky are upset to learn that their friend and neighbor Mrs. Morgan is moving, and it looks like a family with an obnoxious boy named Ollie is set to move in.