Thierry is a real-estate agent desperately looking for an apartment for Nicole and Dan, a pair of very difficult clients. Meanwhile he is also trying to seduce his assistant Charlotte: a sexy girl, but practically a saint! Charlotte lends him a cassette of her favourite TV program: a religious show. Only Thierry is in for a big surprise! Meanwhile, his sister Gaëlle is searching for true love. She meets Dan through a matchmaking agency and things go fine, until she sees him together with Nicole. Dan confides in Lionel, a barman who has hired Charlotte as a night nurse for his father Arthur, a terminal patient with an unbearably nasty character. Charlotte pulls off a miracle, getting Arthur to behave, and she leaves Lionel a cassette showing her “performance”...