A group of friends in Hong Kong's elite boating scene find their summer getaway descending into betrayal and power plays as hidden agendas surface.

College student Tadashi 'Hachi' Inukai is tired of feeling like a loser. But that all changes one day when he accidentally conducts a mysterious ritual he finds online, summoning a demonic yokai to the mortal plane, nicknamed Izzy. Bonded by magic, Hachi and Izzy must figure out how to navigate life, love and murder.