天上掉下个猪八戒

High school teenagers accidentally unleash an ancient Irish entity on their hometown and must stop it before midnight on Halloween.。香港某离岛别墅，深宵，年迈的大富翁榕生离奇堕楼毙命。次子唐仲坚闻迅后，乃偕情人艾娜从法国返港，即遭长兄伯坚训斥，两兄弟言语冲突，几欲动武，久无讯息的三子叔坚，突为分遗产而来，三兄弟互相攻讦，反目成仇。惟独幼妹少兰冷漠处之，静观家变……。