Dae-su, once a promising taekwondo athlete with ‘incompetent swing kick’ and Mira, who dreamt of becoming an idol, unexpectedly became teenage parents at the age of 17. Now they’re 33…

Soo-hyun comes across magical pills that allow him to go back and forth in time. 30 years to the past, young Soo-hyun meets future Soo-hyun and learns that his girlfriend…