Lu Ren, a 38-year-old cardiologist, died of sudden cardiac death from overworking the night shift at his post. Opening his eyes, however, he is reborn back into his university days in 2015. Betrayed by his girlfriend in his previous life and having wasted half a lifetime lingering in a county hospital, this time he decisively dumps his ex, firmly grasps the casting opportunity of the medical season of "The Heartwarming Offer" that he missed out on as a scam text message in his past life, breaks into Jiangcheng Union Hospital with a set of superb medical skills, astounds the entire audience during interviews, ward rounds, and rescue after rescue, stages a counterattack all the way from the most underlooked undergraduate, and regains control of his own heartbeat and life.