Doctor Béranger is a famous psychoanalyst who has succeeded in everything. His life would be perfect if it weren't for one extremely anxious and clingy patient: Damien Leroy. To finally get rid of him, he makes him believe that the only way to heal is to find true love. But just as he is about to celebrate 30 years of marriage, his daughter tells him that she has finally found the man of her life, who is none other than... Damien. The party turns into a nightmare.