Handsome young Philippe, still living at home with his mother and two sisters, has a promising career ahead of him. At the wedding of his sister Sophie, he meets her stunning but strangely aloof bridesmaid, Senta--and it is love at first sight. But Senta's life and past are shrouded in mystery, and she tells him stories about herself that seem unbelievable. Then she declares that as proof of their love to each other, each of them should kill a total stranger. But is this just another of Senta's wild stories? And how far is Philippe willing to go, even as his love for her seems to know no limits?