Eight years ago, the Chen family was wiped out. Its sole survivor, Chen Tianyang, rose from the ashes and returned as the peerless fighter known as the “Dragon-Slaying Youth.” To keep his enemies from targeting others, he hides his identity and goes to the home of Longjiang’s wealthiest family, the Longs, to call off his engagement. But his future father-in-law, Long Zhengyun, refuses and publicly names him the family’s sole heir. The entire Long family treats him as one of their own and fiercely defends him. Faced with the jealousy of powerful families and plots by his martial-arts enemies, they are willing to risk everything for their son-in-law. Deeply moved, Chen Tianyang becomes a ruler of the night, eliminates every threat, and vows to protect the Long family with his life. This action-packed tale turns expectations on their head with a fiercely protective father-in-law and a hidden master who stands up for his family.