TIN YAT (CHOW YUN FAT) who is an extraterrestrial comes to Earth accidentally.Just when he is about to die from lack of water, KWOK HAK CHUNG (LEUNG CHIU WAI) arrives and saves him.

• 外星人天日(周润发)来到地球，因找不到水源，生命危在旦夕，幸及时被郭克松(梁朝伟)所救。