At a Paris hotel, a hotel detective fired after a murder took place there continues to investigate, helped by his inspector nephew and girlfriend. A boxing manager, owing money to a couple and the mafia, rides on a match next day.

In a Paris hotel, two detectives are investigating a two-year-old murder. Emile and Francoise Chenal are putting pressure on Jim Fox Warner, a boxing manager, who owes them a huge amount of money. But Jim also owes money to the Mafia, and it seems the boxing match he is counting on to bail him out will not be sufficient.—Yepok