After leaving their criminal past behind, Maru and Mica have not spoken to each other for years, until the arrival of a mysterious envelope brings them closer.

In exchange for their silence, Paola demands that Maru and Mica put Romero, a young businessman, to sleep and hand him over to her. Meanwhile, the foundation's women suspect something strange in Maru's past, and Pablo believes his wife is lying.

After several failures, Maru and Mica decide to train two younger girls to seduce Romero.

Maru and Mica train the new Black Widows while the women at the Foundation grow increasingly suspicious of Maru's intentions.

Maru and Mica infiltrate Gussi's widow's house and discover a secret that allows them to corner Paola. Maru reunites with her family. Mica and the young widows face a new obstacle that forces them to rethink their plan.

Mica goes out partying with Antonella and forges an unexpected bond with Romero's security guard. Following Maggie's accusations, Maru is forced to tell her mother the whole truth about the Gussi case.

Mica and Maru manage to put Romero to sleep, but their problems don't end there: now their lives are in more danger than ever. The girls discover that Gussi's death wasn't what they thought, so they follow a strange lead from Nelly to find out what really happened.