Grace, Grant's sister, comes to visit the Robert family much to everyone's displeasue. It is especially hard for George who left her.

Joyce is reading to leave Danger Day behind herm but when the Roberts are taken hostage she has time to think it over.

George and Grace worry about the Roberts and go to help them meanwhile Joyce has to contend with other problems.

A training survival course proves to be more than Nicole wants when things go wrong.

While J.L. is flying his plane he encounters a storm which leeda to him crashing. On board the plane was Grant and George who are injured. Back in Danger Bay, Grant's children and Grace must face the possibility that the search party may not find the missing men.

The annual bathtub race arrive in the strait of Vancouver and Nicole and Jonah want to enter. The adults see the possibility of getting extra sponsers for the aquarium. With three new sponsers and three new bathtubs a rough ride awaits Jonah, Grant and J.L.