A lively five-year-old girl living peacefully with her grandmother suddenly remembers her past life as a Taekwondo prodigy who always fought for justice. Along with those memories comes a shocking realization—she may have an important role in saving the world.

Despite her tiny appearance, she possesses unbelievable strength and powerful martial arts skills. As she fearlessly punishes bullies and protects those around her, everyone begins to see that this cute child is far from ordinary.