Shen Yan and Jiang Mian have been best friends for eight years. One day, they both transmigrate into an unfinished CEO romance full of angst. Shen Yan becomes the doomed “substitute for the first love,” while Jiang Mian becomes the “vicious supporting character” destined to go mad. The first death flag is just seven days away. The System says they must change the plot to survive. So they decide: no more following the script.