Billy Grogan’s dad used to tell her life is wild and finds its own way home. But he never did. He went fishing for a marlin two years back and never came home. Now Billy lives with her granddad, dreaming of the ocean and adventure while her life goes down the dunny.

Then, one dark and strange night, a miraculous marlin takes her and her granddad out past the reef, to the open ocean and the deep. But will either of them find their way back home?

Inspired by classic seafaring literature, Marlin is set in the game fishing regions off Northern Queensland and played in a sea of foam.

Marlin explores the special relationship between grandparents and grandchildren with themes of grief, redemption, and victory.