Sang Yi, who was admitted into the Shen family at the age of eight, has long regarded Shen Yu as his dependent "brother-in-law." When she was eighteen years old, she was recognized by her biological father and spent a year in an indifferent native family. Finally, when she was drugged in a bar, she was rescued by Shen Hui and returned to the Shen family.
Sangyi returned with a broken tenacity, but Shen Yu looked at her, and the protective desire in her heart had already quietly deteriorated. The gears of fate were turning quietly: he silently guarded her in her nightmares, shielding her from the harassment of her original family, with transgressive tenderness hidden in his eyes; she also gradually discovered that the concern of her "brother-in-law" had already gone beyond family affection. When the label of "uncle and nephew" collides with the surging love, the two struggle and begin to explore the possibility of facing their true feelings.