A woman named Seo Ji-Woo (Im Soo-Jung) traveled to India and met her first true love Kim Jong-Ok. Since that time Ji-Woo can’t forget her first love. She then turns the company “첫사랑 찾기 주식회사” – which means literally “Finding Your First True Love Company” to help track down Kim Jong-Ok. Han Gi-Joon (Gong Yoo) started “Finding Your First True Love Company” and he takes on Seo Ji-Woo is the company’s first client. The pair travel all over Korea to find Seo Ji-Woo’s first love and & in the process Han Gi-Joon falls in love with his first client …

Having died unexpectedly, firefighter Ja-hong is taken to the afterlife by 3 afterlife guardians. Only when he passes 7 trials over 49 days and proves he was innocent in human life, he’s able to reincarnate, and his 3 afterlife guardians are by his side to defend him in trial.

Set during the early Joseon Dynasty, the film begins with the queen mother and former concubine (Park Ji-young) in a precarious position of having no blood ties to the childless king (Jung Chan). She schemes to replace him on the throne with his stepbrother and her submissive young son Seong-won (Kim Dong-wook). Indifferent to his mother’s plans, the timid prince falls in love at first sight with Hwa-yeon (Jo Yeo-jeong), an aristocrat’s daughter, who has already found love with Kwon-yoo (Kim Min-joon), a commoner. The king is eventually poisoned to death by the queen mother, who is desperate to be in power. Hwa-yeon is moved to a closely watched humble residence, with the queen mother planning to assassinate Hwa-yeon and her son to secure her position in the palace.