Story: When an underwater storm destroys a small reef, which a frogfish and other creatures depend on, Tweak and her crewmates must convert the Gup-F into an artificial reef before another storm strikes!.

The Octonauts is a British children's television series, produced by Silvergate Media for the BBC channel Cbeebies. The series is animated in Ireland by Brown Bag Films but uses British voice actors. The TV series is based on American-Canadian children's books written by Vicki Wong and Michael C. Murphy of Meomi Design Inc.