The title of the film, set in Luxembourg in 1942, during the Nazi occupation, amalgamates the words Schacko (helmet) and chapeau claque (opera hat). The village, in which it is set, has not yet been feeling the effects of the war at this point.

When the ambitious Philip takes over the running of the family business from his father, he finds himself confronted by the mysterious reappearance of his dead ancestors. In the course of a long night, during which there is a murder, an illicit love affair and a game with false identities, Philip uncovers a closely guarded family secret.

Four elderly men (Fons, Lull, Nuckes and Jängi) are fed up with being walked all over and treated like children. Together with their friends, they plan a future without old people's homes. But that's easier said than done.

Since she’s started a passionate new relationship with the handsome and mysterious Joakim, life is smiling back at Lara again. Her marriage to detective Toni is but a distant memory. But when he accuses Joakim of having committed a series of unsolved murders in Luxembourg City’s Peitruss Valley, Lara’s world is thrown upside down. While trying to prove his innocence, she starts to wonder how well she really knows the one she loves.

A clumsy Elvis-imitator and an unsuccessful russian dancing-master save a banker from the attempted murder of the Mafia.