Xu Dashan, a 32-year-old boxing gym owner, and Lin Youyou, a 20-year-old female college student, woke up after a lightning strike accident having swapped bodies. The pigtail softie opens her mouth to say "Laozi", sticking up for her roommate and sorting out scumbags; while the two-hundred-catty muscular man with flower tattoos sheds tears as soon as he is glared at, hugging a strawberry milkshake and acting spoiled. One fears the gym sign will be ruined, the other fears her campus life will be upended, and the more they try to trick each other back, the more outrageous social deaths they cause. To top it all off, final exams, sponsorship negotiations, and rival challengers come knocking one after another. Wanting to swap their lives back, they have no choice but to learn to live for each other first—but can this body really behave?