My mom is the naive and sweet protagonist in a tragic romance novel. My mom is also the substitute lover who escaped from the overbearing President. And I? Well, I'm the five-year-old genius hacker.

Gu Chu, a brilliant hacker, finds herself reborn in a tragic romance novel as a five-year-old cutie. Her mother is the unfortunate heroine, her father is the blind-to-reality President, and they're surrounded by scheming relatives, a two-faced aunt, and various villainous women.

Determined to protect her mother, little Gu Chu stands tall and begins to fight back. What harm could a five-year-old possibly cause? She just wants to protect her mommy and maybe inherit her President daddy's billions along the way.