When returning from picking out decorations for her birthday party, Angelina accidentally damages her old bicycle beyond repair and soon begins doing odd jobs to earn money for a new one.

Afraid that her smallest child, Colin, will be hurt if he goes outside or plays, a mother mouse insists that he sit quietly indoors until his grandmother suggests wrapping him in cotton wool, which proves to be effective, but in a most unexpected way.

Mama Mouse and Little Mouse, having seen and heard various animal parents pledging their love to their children, tell each other how special they are.

Molly has been invited to a party, but she would do anything to stay at home.

After moving into a grand new house and fixing up his old one for Grandmother Mouse, Badger realizes that he misses his former home.

Summary: Dot and Jabber, mouse detectives, try to solve the mysery of the disappearing insects.