Seoul, 2008. On a bus heading to their hometown, fate brings Eun-ho and Jeong-won together, sparking an unlikely friendship. While battling a bustling and weary city life, they find themselves sharing lofty dreams and a love that comes to feel extraordinary. But, eventually, the harsh realities of life lead them to part ways. Over a decade after the separation, the two unexpectedly reunite on a flight back to Korea, where they reflect on their lost time.

Seon Woo-hyeol is a vampire who wants to become a human but ended up becoming half-human when he woke up a day before completing his 100 years of sleep. Meanwhile, Joo In-hae is a modern lady who shows no compassion about him and only wanted to survive. Will they find love and learn to care for each other now that fate brought them together?