Muscle Girl is the new Japanese drama series that stars Lee Hong Ki. Lee Hong Ki plays the role of Yoo Ji Hoo, a famous pop star. Yoo Ji Ho's mother disappeared 1 jaar ago. A jaar later, during his performance in Japan, he left to look for her. The manager of Ji Ho trys to look for him but cannot find Ji Ho and will almost do anything to get him back. Meanwhile, a Japanese girl named Shiratori Azusa (Ichikawa Yui) had just become the new director of a female pro wrestling company, Shiratori Wrestling, after her father died. She was left with a big debt that had to be paid of else the wrestling...