By day, Lucas, a 29-year-old Italian, lives as a renowned trainer of dolphins and orcas, captivating crowds with his dazzling shows. By night, he reigns over the dark underworld as the feared mafia boss of Dark Flag.

Everything changes when his favorite orca begins to reject him. His search for answers leads him to a mysterious young woman who secretly visits the marine park, forming an unusual bond with the creatures.

One day, in a fit of rage when the orca falls ill, Lucas strikes her (the firl) in front of everyone—only to learn the shocking truth: she is mute, her silence born from witnessing her mother’s brutal murder at the hands of his rival mafia.

Intrigued and haunted by guilt, Lucas begins to observe her from afar, discovering that in her sleep she still speaks, revealing that her lost voice can return. As he unravels her tragic past, he uncovers an even darker truth: the rival mafia hunting her now is the same that slaughtered her family—led by the former boss he swore to destroy.

Bound by guilt, vengeance, and a growing attachment, Lucas takes on her silent pain as his own, vowing to protect her and claim vengeance for the blood that binds their fates. He will love her and get close to her to take revenge for him and her, and she will become his new obsession.