After being stood up three times at the marriage registration office, Iris discovers her fiancé Liam has married their mutual friend Chloe. Heartbroken, she turns to Miles, her bipolar childhood sweetheart who has secretly loved and protected her for years. She impulsively marries him, beginning a journey of healing and unexpected love. As Liam regrets his betrayal and Chloe’s lies unravel, they face the consequences. With Miles’ gentle support, Iris reclaims her happiness, and together they build a meaningful life helping others.