In the wild west, two brothers embark on a journey to collect a bounty in a desperate attempt to save their home: but what they find along the way is more than they bargained for.

一艘正在寻找不明潜水器的军用船只发现自己与一只巨大的鲨鱼面对面，他们被迫只使用船上的东西来保护自己不受这只巨兽的伤害。