Bankrupt heiress Shen Lanyue possesses formidable combat skills and applies to become the personal bodyguard of Fu family young master Fu Yanshen. After suffering setbacks, Fu Yanshen traps himself in a dark room, locking himself away with a difficult and eccentric personality. Shen Lanyue bursts into his world, using her straightforward and tough nature to accompany him out of his psychological haze. Amidst bickering and tactical sparring, the two develop mutual affection, breaking through heavy hardships together to reap career success and love.