Even after twelve years, Štěpán, Kendy, and Karas have remained true to themselves. They are inseparable friends with an inexhaustible sense of humor and a knack for self-irony, albeit with a slight touch of skepticism.

A team of detectives bumbles and fumbles their way through an investigation that involves murder, blackmail and possibly someone they know.

The staff at the White Cat Inn watch with concern and suspicion as Johan, the postman, pays frequent visits. This dapper, suave gentleman persistently courts Kristýna, the widowed innkeeper, even though he otherwise despises the locals. Kristýna's son Vítek dislikes him. And even more so when Johan tries to drive his pet and protector of the inn, the white cat, out of the house! Vítek, Kristýna's servants, and her friend, the poacher Prokop, are determined to get rid of Johan or at least make his life miserable. And things start to happen at the inn...

Shark in the Head unfolds into a stunning cinematic powerhouse that combines comedy and drama for a touching story about how we influence the people we meet while being profoundly affected ourselves by the colors they bring to our own lives.