On a rainy night in Jinling, an unexpected encounter leads to a fateful night of passion. Shen Ruihan, the legitimate daughter of the Shen family, becomes entangled in a destined romance with warlord Gu Yanbei. She secretly becomes pregnant with his child, only to fall into the River of Oblivion. Five years later, through a twist of fate, she mistakes the gravely wounded Gu Yanbei for her foolish fiancé and vows to stay by his side. He pretends to be dim-witted while concealing his sharp instincts, weaving a web of love through every embroidered thread and stitch. As fragmented memories flutter back like shattered butterfly wings, lies and truth collide, enemies close in, and blood ties are torn apart. At last, an old dream is reunited. Amid the flames and turmoil of a war-torn age, the butterfly on her arm awakens, exposing a long-buried tragic entanglement. Love and hatred intertwine like threads, ultimately stitching together a magnificent land. Hand in hand, they mend their broken bond and embrace the warmth of an ordinary life.