I Know the Secret of That Day

Han Hee-won, one day at the age of thirty, learns that he was switched at birth with a chaebol family's son and raised in an ordinary household. His biological parents find him, and he discovers that the people he thought were his parents adopted him and raised him with love. A timid person, he doesn't get a chance to express his own wishes and ends up living with his birth family. Unable to adapt properly, he meets his death at the age of thirty-five due to the machinations of Jung Ye-joon, who grew up as the second son. Afterward, he returns to the age of twenty-two, before his military discharge, and is saddened to realize that the day is his adoptive parents' funeral. Hee-won chooses a ...