Haicheng's richest man, Lu Tingye, due to a special physical condition, is uniquely unreceptive only to the mysterious girl who saved him on a rainy night years ago. Years of searching have repeatedly met with impostors taking her place. Ordinary girl Lin Xiaxia works desperately to raise treatment fees for her family; during a chance encounter, Lu Tingye feels a familiar aura about her. The impostor seizes the chance to disrupt things, and Lin Xiaxia leaves in a hurry. Lu Tingye uses the keepsake she left behind to see through the lies, continuing his persistent search for that one and only crescent-moon girl who can approach him.