一群好友趁著周末假期來到位於深山的豪宅狂歡，沒想到竟遭到一群食人血肉的變種巨虻攻擊，原本歡樂的假期瞬間成為最恐怖的夢魘！

Wonderfast is a leading delivery company all year round, except on Christmas. In order to destroy Santa, they manage to infiltrate Genny Catalano, "The King of the Box" or more likely “The King of the Hoax”…