Betrayed and abandoned by her boyfriend on wedding ceremony ceremony day, Kalina has decided to open unusual enterprise that may as quickly as and for all resolve problems with male fidelity. She decided to help women testing loyalty of their companions. The whole thing goes successfully until Kalina has to seduce Maciej – coach and specialist in female – male affairs. His partner Beata suspects that he is dishonest on her and must have irrefutable proof. Kalina, understanding class “opponent” begins working with redoubled energy, nonetheless this time all her plan goes mistaken. Maciej is not like completely different man whom have been merely caught dishonest.