Ai studied abroad until, after being expelled for quarrelling, his father forces him to return to Thailand where he attends classes at the university where he teaches. There, Ai meets Chen Nhai, his new Harley Davidson-riding classmate who has an obsession with a yellow duck keychain. Ai falls in love at first sight and a whirlwind romance ensues. (Source: MyDramaList) ~~ Adapted from the novel "Ai Long Nhai" (อัยย์หลงไน๋) by Nathakorn (นทกร).