Kit’s father, Lee, is in a coma in the hospital. He was supposedly injured by a mysterious fighter, the Hornet. Kit is determined to avenge her father. But she was forced to take on several jobs to pay her father’s hospital bills. Ally finds out that an MMA competition offers a sizeable prize and suggests Kit take part to help defray her expenses, and to learn from a former champion, Coach Latte Wang.
Determined to find the mysterious Hornet, Kit takes up training with an MMA champion to find her way into the mysterious underground fighting league. By chance, she finds Coach Wang, the MMA champion, whose principle is not to take any female trainees. Kit has a hard task convincing Coach Wang that she would make a good student.
Kit’s determination has opened a doorway to the MMA world under the tutelage of Coach Wang. But the training is rigorous, and Coach Wang is also out to prove that Kit will not make it through the training. However, Coach Wang is not quite prepared for the flirtatious advances from Ally, who is all out to win his heart.
Coach Wang steps up Kit’s training regime, and arranges for her to learn various fighting disciplines that may give her an edge in the MMA matches. To further enhance her skills, Kit puts in more appearances in the underground fighting arena. Ally gets Kit to create more opportunities to cosy up to Coach Wang, but unknowingly lets the two of them to get closer instead.
Coach Wang and Kit both realise that they have feelings for each other, and agree that they will get together after the AFC competition. Kit makes it to AFC, the MMA league competition. But her opponent in the opening match is Angel, the prevailing champion. Having lost round 1, how will Kit perform in the next rounds?