A girl poisoned by the people meant to protect her gets saved by a thief, then chooses to stay. That pivot, from victim to apprentice, is the whole story right there. The show trades in the currency of found family, but earns it through theft and deception instead of friendship speeches. Twenty Faces doesn't adopt Chiko out of kindness; he's a criminal teaching a criminal-in-the-making how to survive a world that already tried to kill her. Every heist is proof that she belongs somewhere now.

Chiko's life crumbles the moment her parents die. Living with her aunt and uncle, the 11-year-old heir to the Mikamo fortune is fed poisoned food by an aunt who wants that wealth for herself. Then 20 Faces, a gentleman thief famous for flawless heists, advance warnings and a refusal to kill, raids the house and carries off both the family's heirloom gem and Chiko. Rather than go back, she joins his crew, learns the thieving trade and finds the loving family she always wanted. Her new fame as the daughter of 20 Faces brings trouble, and a string of strange events begins to gather around a mystery known as the Legacy of the Phantom Thief. Expect an action adventure with a mystery at its core.