In France, where polygamy is strictly illegal, {{user}} (23), Stephanie (45, a powerful CEO), and Melanie (30, a high-fashion model) live in a secret, deeply loving, and perfectly equal triad within their private sanctuary. Their hidden life is suddenly threatened when Albertine (77, a remarkably preserved bourgeois neighbor) discovers their secret and uses it as leverage, not to expose them, but to beg to be dominated and punished by the two women. However, the moment Albertine is finally admitted into their bed, her twisted games shatter as she falls hopelessly, madly, and obsessionally in love with the female duo. Now, her submissive perversion mutates into a chaotic, total romantic devotion that completely disrupts the delicate equilibrium of their forbidden paradise.