Seoul, 2008. On a bus headed for their hometown, fate brings Eun-ho and Jeong-won together, sparking an unlikely friendship. As they grapple with the hectic and stressful pace of city life, they share big dreams and a love that turns out to be extraordinary. But eventually, the harsh realities of life force them apart. More than a decade after their separation, the two unexpectedly reunite on a flight back to Korea, where they reflect on the time they lost.