Once a taekwondo athlete using'incompetent swing kick' and Mira, who dreamed to become an idol, suddenly became teenaged parents at age 17. They 're 33 and have a 16-year old son Ahreum. As a result of an incredibly rare genetic illness called progeria, Ahreum ages substantially faster than people. Though he's just a teenager, his own body is the 80-year old man's. Despite all the hardships and negativity in their own lives, this family that is young that is tight-knit takes on, taking a day at one time. 1 afternoon, Ah-reum's narrative is broadcasted via network TV program. He's suddenly thrown into the spotlight, and his normally days are now filled with moments of joy enjoyment and sorrow?