The notorious Official Choi wants the precious heirloom of commoner Kim Sung-bo's family so he has the whole family killed and seizes the heirloom. Kim Sung-bo has become a spirit. On rainy days, he goes into the body of his friend Jung Il-do and tries to have his revenge on Official Choi.

The body of a Hong Kong investigator who had been on the trail of drug smugglers floats up in a river. After police get information that drug smugglers are secretly active in the city, an officer goes undercover as an escaped convict to infiltrate the ring.