Daniel Tiger, his sister Margaret, and their friends are excited to take part in a music class together. However, when it comes time for their fathers to leave, Margaret and Daniel are anxious about their father leaving. He assures them “grown-ups come back,” a lesson the siblings later share with their friends, who also start getting upset at their dad's absence. / Katerina learns the same lesson when her mom goes out to dinner, leaving her in the capable hands of O and X, the Owls. While Katerina is nervous about being away from her mother, she has fun and learns that grown-ups will come back.