Seven years ago, during her engagement party, He Zi Ning unexpectedly had a one-night encounter with Huo Yan Shen. Seven years later, He Zi Ning returns to the same hotel for work. By coincidence, her young son He Chen Xi becomes the bridge that connects her once again with Huo Yan Shen. He carries a long-standing promise to the mysterious girl from seven years ago, while she searches for the man from that night to save her child’s illness. By a twist of fate, they finally discover — the person standing before them is the one they’ve both been searching for in their hearts all along.