A powerful and dangerous fairy, infamous for her violent and unstable nature, ends up turning into a baby in order to hide her identity and track down those responsible for her mother’s death and past experiments.

Now living under a new identity in a noble household, she pretends to be an innocent child while secretly planning her escape and collecting information. However, things quickly spiral out of control.

The family that adopts her turns out to be just as strange as she is. The household members—her new father, her three obsessive brothers, and even a relentless inquisitor from the Holy Empire—become intensely attached to her in increasingly unsettling ways.

Instead of being a simple undercover mission, her new life becomes a chaotic mix of affection, suspicion, and danger. As she struggles to regain her adult form and uncover the truth about her past, she realizes she may be trapped far longer than she planned—surrounded by people who are just as “unhinged” as she once was.