In a dangerous underworld ruled by ability-wielding mafia families, the Solberg Clan faces collapse after its Boss mysteriously disappears. Into this chaos awakens Aria Solberg, a reincarnated girl trapped in a three-year-old’s body. Though tiny and seemingly helpless, Aria possesses rare powers: supernatural hearing and a charm aura strong enough to sway hardened criminals. Forced to act innocent while navigating ruthless politics, she must choose a guardian, survive rival attacks, and uncover the truth behind her family’s downfall, all before she even learns to write her own name.