Fallen heiress Luna signs a cruel contract with domineering billionaire Vincent to save her critically‑ill younger brother Noah. Misled by conspirators, she blames Vincent for her family's ruin and leaps into the sea to escape him. Four years later, Luna returns with Milo, his secret biological son. After countless traps, framing and a deadly rooftop hostage crisis, all villains get punished. All misunderstandings are cleared up, and Luna, Vincent and their son finally build a happy family.
