A priceless, antique painting of Jesus Christ, executed by Tintoretto, was gifted to a member of the Niyogi family. When it goes missing, a member of the Niyogi family invites the famous Prodosh Mitter, aka Feluda, along with his team comprised of nephew-cum-assistant Topshe and that noted writer of detective thrillers Jatayu, to his house to find out the missing painting that has obviously been stolen. But before he can solve the mystery of the stolen painting, he faces the challenge of solving the mystery behind the fake. Rudrashekhar, another member of the Niyogi family, who ran away to Mumbai to become an actor, comes home when he fails to make it as an actor and actually intends to steal the painting of Christ. The other suspect is Robin Choudhury, also a member of the same family, who steps in posing as a journalist but has plans to sell the painting to a museum in Europe. The hunt for the painting leads to Hong Kong to one Hiralal Somani, who, under the guise of an art dealer, is a Marwari smuggler who operates from Hong Kong. He is an educated, middle-class smuggler who poses a challenge to Feluda who has never encountered a villain like him in his earlier encounters. In Hong Kong, they are house-guess with Purnendu, an elderly non-resident Bengali who has lived there for many years and who helps Feluda and his team with men to chase Somani and nab him. How Feluda uses his skill in judo, aerobics along with his intelligence to nab the very slick,
sophisticated and smart Somani makes for a gripping climax shot on a boat in the sea at Hong Kong.