Punch Back, Secretary Jin

Once a world MMA champion, Xi'er Jin returns home to begin a new chapter. When she finds her twin sister being mistreated at work, she steps into the company in her sister's place and pushes back against a tyrannical boss and hostile coworkers. In the middle of their clashes, feelings begin to surface between her and the boss. But the situation grows even more complicated when her twin sister also falls for the same man. How will this tangled triangle end?