Sarah's stepmother has once again assumed Sarah would be happy to babysit her infant stepbrother, Toby. Sarah is hurt that her stepmother and father go out every single weekend, leaving Sarah behind to watch a brother she is apparently not fond of. After arguing with her parents, Sarah tries to quite Toby's cries while a storm rages outside.

Frustrated that she can't quiet Toby, Sarah tells him a story about the Goblin King falling in love with a beautiful young girl whose stepmother always made her stay home with the baby. Toby continues to cry and Sarah makes a desperate wish that the goblins would come and take him way. Realizing her wish has come true, Sarah tries to persuade Jareth to return Toby. The king tells her that she can only rescue Toby by finding her way through the labyrinth outside Jareth's castle. Sarah has 13 hours to solve the labyrinth before Jareth will turn Toby into a goblin.