The story started when Thiptara or Nam (Kimberly Ann Voltemas) the youngest of the 4 quadruplets of the Adisuan family, met and fell in love with Puwanes (Atichart Chumnanon) the crown prince of the country called Parawat, who Nam believes is a simple worker on his brother Fai’s (Nadech Kugimiya) farm.
When Prince Puwanes visits Thailand, he is victim to an assassination attempt organised by the Prime Minister Shadul (Noppon Gomarachun). He is badly injured and gets sent to the hospital where Nam is his attending doctor. During his recovery, Puwanes has to pretend that he lost his memory in order to protect his identity and safety. Nam nicknames him ‘Pupen’ meaning crab, since he apparently cannot remember his real identity.
