In Pattaya, a vibrant city that never sleeps, A-po (Bright) takes his friends around to collect debts day after day. Although A-po appears to be tough on the surface, his debt collection methods are quite unusual. Not only does he not resort to violence against debtors, but he will pick up things at hand and knock himself to the ground until his head is bleeding, so that the debtors will pay the debts quickly. A-po, who has no ambitions, meets Xiaoying (Yaya) one day who has to work hard to repay her father's debts. Xiaoying looked down on A-po from the beginning, but A-po fell in love with her at first sight. Out of love and sympathy for Xiaoying, A-po proposed a dating contract - paying the interest by dating him. Xiaoying had no choice but to agree to this arrangement reluctantly. During the twists and turns of the two dating, they gradually discovered each other's sincerity. But what happens when the debt collector falls in love with the debtor? And where will this debt-ridden love journey lead the two people in the end?