Mok Ming moves into Po Tak-yan’s old mansion. Po's mistress, the songstress Tsi Law-heung, has died in it. Her spirit haunts the mansion as she is unburied. Mok sees her ghost and notes that she resembles his late wife Kit-ching. Mok dreams that his wife has possessed Tsi's body in return. Mok asks Uncle Tak to take him to the coffin. Tsi resurrects as Kit-ching. Mok accepts that his wife has returned from death, but he is suspicious. He brings her to a nightclub, where they chance upon Po and his mistress, Chan Mei-chu. Po is suspicious. Mok explained that his wife has returned through Tsi's body. Two reporters are there and the news is reported in the papers. To resolve his suspicions, Po goes to the old mansion. He meets Mok, his “wife,” and Uncle Tak. The wife denies that she is Tsi. Po retrieves a pistol and goes to confront the woman. Mok intervenes. In the struggle, Po falls down the railing to his death, but Tsi is shot. Now it is time for her to tell Mok of her past.

This is a film that celebrates the moral function of art. Sun Ma Si-tsang, at once a master Cantonese opera actor and a talented comedian, showcases an oft-overlooked style of singing, presenting it as an inspirational force that saves life and betters relationships. He plays the titled character, who doesn't operate a boat and is nowhere near bodies of water, but an artist specialising in the Dragon Boat style of music. Forced to perform on the streets to make a living, he ventures into situations manifesting the many societal problems that plague Hong Kong, inspiring and elevating common folks with his artistry. He stars alongside Leung Sing-por in a classic animation of comedy partnership, generating laughter from the interactions between players of contrasting body types.