As a member of a “Love Story Agency” Jun, the Cupid, helped people confess their love, become couples, and live long lives together. But after some trials and mistakes, he gave up his personal life. One day, fate sent him an annoyingly sweet guy who decided to make Jun believe in love again. How did they get married on the first day they met? Well, Jun would like to know that too. Moreover, this marriage could not be dissolved before they fulfilled their vows!