The renowned Insurance International Co. has created an enquiry network, headed by detective Jack Clementi, to defend itself against insurance fraud. Jack has saved the company enormous amounts of money throughout his successful investigations and his bosses are more than willing put up with his brusque manners, his disconcerting frankness, and his intolerance for any form of company bureaucracy. Yet he is a big guy with a huge heart.

The title reflects the brand of a financial institution, the bank of the Saltim family: Frederic, the younger brother, runs the family bank; his brother Bruno rejected the position of executive director, and chose to fund a theatrical company. Around them, there is a net of family members, friends, and acquaintances who seem to swirl around the banking brothers. Frederic and Bruno are both trying to control the future of their beautiful niece, Vanessa. The coffee shop owners Eve and Jim complicate everybody's life with their intrigues and lies. A strange stage director comes from his foreign exile. And lack of funds suddenly reveals the true colors of everyone - in banking, on stage, and everywhere.

A miraculous mushroom is discovered by a film director's daughter. It would be used to cure an actress.