Tobias hates mash and Steve hates Tobias, but when they discover their mom to be patient zero in a world of flesh-eating zombies, the torn apart brothers get pieced back together, only to be torn apart all over again. Under-pinned by a deep sense of tragedy and fuelled by meticulously choreographed fights, we follow two brothers as they care for their infected mother, fend off the incoming undead, and mend their fractured relationship.