An Overweighted woman- Shan, always faces inequal work experiences due to her body shape and her trady action, which leads her to feel really doubtful and frustrate about herself. While she meets an optimistic fatty named Mac, who always encourages her on the way, she starts to build up confident, not being stubborn anymore, and started to improve the relationship that between Shan and her children as well. Later, Shan and Mac starts to work together as securitys in a shopping mall, while they were investigating about a bomb case, they got no clue of how to start it. But after a period of time, they finally show out their inside potential out and strength to others.