Top consultant Tian Cheng, bound by a deathbed promise to her best friend Jiang Ye, takes on the role of guardian to restrain his younger brother Jiang Beichen and assume control of the Jiang Group. The two test and guard against each other, and while battling the obsessive villain Chen Feng, they join forces to investigate Jiang Ye's death and the cold case of Jiang Beichen's mother. Amid power struggles, these evenly matched rivals develop a love full of extreme push-and-pull, break through identity gossip, and gather evidence to bring the mastermind to justice.