Half-Chinese and half-Japanese Mari Hirakawa is the daughter of a Karate coach. Since her childhood, she was forced under her father’s training, and has resented Karate for as long as she can remember–her only wish is to sell the dojo after her father passes away. Following his death, Mari starts fantasizing about her life of freedom; however, she finds out from her lawyer that her father has only left her 49% ownership of the property, the other 51% was left to one of his worst pupils, Chan Keung. The two clash, and Chan has a proposition – if Mari is able to win a match in a legitimate martial arts competition, he will unconditionally give her his share of the property. Mari is trapped in a dilemma, and will have to make a choice that will change her life…