In his wild childhood, wealthy‑heir Qin Mingyuan is sent to the countryside for training. There he is tamed and disciplined by Su Nian, a village girl born with superhuman strength. The two exchange jade pendants as a promise of engagement. Eighteen years later, Qin Mingyuan has become a world‑champion fighter, yet he searches in vain for his childhood sweetheart. Su Nian, now the godmother of the underground world, is taken back by her birth‑family, the Lins, to take the adopted daughter’s place in an arranged marriage with the Qin family. After getting their marriage certificate, they clash repeatedly. Qin Mingyuan falls for her little by little. He finally uncovers Su Nian’s true identity, clears up all misunderstandings, and the two choose each other, living happily ever after.