When the remains of two murdered Princes are discovered at the Tower of London, a troubled Priest must put his beliefs aside to befriend a mysterious prisoner, who has supernatural powers to communicate with the dead. Together they must solve the mystery of who murdered the Princes, as prisoners in the castle dungeon m…

一群朋友展开放松的周末旅程，要到英国乡下的运河度假，却浑然不知水面下藏着食肉的变种生物……它们准备好要饱餐一顿。