The family of the head of the leading catering enterprise Mu Group suddenly encountered an accident abroad. The second daughter Mu Li received a heart transplant from her elder sister, replaced her twin sister, and became a little flirt to approach her future brother-in-law Mo Chen, the "initiator" of the online acquisition of Mu Group, to secretly investigate the truth of the accident, but found that there was a lot of mystery behind the acquisition. In the temptation of the two people with their own ulterior motives, they resolved crises again and again. Finally, the two found the mysterious opponent hidden behind the scenes, followed the clues to see through the fog and find out the truth of the car accident, and resolved the grudges. So far, the two joined hands to fight against the enemy behind the scenes, and at the same time began a happy time of being flirted and flirting back. In the end, Mu Li not only got the "dominant boss" back, but also brought all those who persecuted her family to justice.