Thai cave rescue hero Dr Richard “Harry” Harris takes on his most perilous adventure yet in Sherpa director Jennifer Peedom’s deep-dive into underwater cave exploration. In a remote part of New Zealand’s South Island,  Harris and his fellow underwater obsessives set out to dive what could be the deepest-dived cave system in the world. Controversially, they plan to use hydrogen as a breathing gas – its explosive nature adding to the many hazards the close-knit team faces. 

As the 2019 Australian of the Year prepares to confront the dark waters and life-threatening cold, he questions the costs of his passion. Award winning director Peedom captures the tension, euphoria and mateship of this endeavour using Harris’s own vertigo-inducing cave footage, along with striking above-ground imagery and a compelling score.