Jeff (Alan Alain Delon) is a silent killer who lives in a hotel with only one bird as his companion. A loner, he was commissioned to assassinate the owner of the club, and although the action was flawless, the police detained him. Piano girl Marelli (Cathy Rozier Cathy Rosier) recognized Jeff as the suspicious man of the day, but she chose to protect Jeff, which made Jeff suspicious. Jeff found the middleman to settle the salary, but the middleman shot him. Jeff, who dodged a bullet, secretly found out the identity of his employer, found him and killed him, but at the same time, he found that Marelli, who had protected him, was the employer's lover. Jeff, with a complex mood, came to the club to question Marelli with a pistol, but he was killed by the police who had been ambushing here. Afterwards, the police found that Jeff's pistol was not loaded, and the significance of his behavior became an eternal secret.