OLD MACDONALD HAD A FARM 阿昌（张锦程）与阿娟（杨梵）夫妇二人开烧腊店，因收留大陆亲戚阿凤（孙佳君）在饭店帮手，阿昌与阿凤发生婚外情，阿娟因此招来杀身之祸，old macdonald hold macold macdonald had a farmdonald had a farmad a farm为了毁尸，阿娟被烧烤成烧味，用作饭店客人佐膳。警探亚生（黄秋生）为饭店常客，凭直觉感不寻常，自动请缨追查此案，在千辛万苦险死还生之下，成功地将杀人及毁尸之凶手，绳之以法