During their college years, Suriyawadee and Khemchart make a promise to get married after their graduation. Khemchart gave her a “Forget Me Not” ring as a symbol of devotion. However, the situation changes when Suriyawadee drops out of college to help resolve her family’s debt burden by marrying an old millionaire. All this is kept secret from Khemchart, who is badly hurt by the sudden loss of his love. Years pass, Suriyawadee has changed her name to Mrs. Suriyong and now has 2 children. Khemchart discovers her new identity and starts planning ways to ruin her life as his revenge, only to find that his heart still longs for her. When the two bruised hearts get hurt even more, there is more than one lesson in love to be learned. Will this test of love bring them back together?