As a first-year law student, Lee Yeon never expected to cross paths again with his middle school crush the charming upperclassman Hong Kihoon. But a chance reunion on campus leads to an even more unexpected twist: a spontaneous trip, and a strange challenge known only as the Red Thread Quest.

Red Thread Quest, Round 1: Five Kisses on the Cheek!

Skeptical about soulmates and fate, Yeon finds himself drawn into the legend of the Red Thread of Fate and as each round of the quest unfolds, his relationship with Kihoon begins to take an unpredictable turn. What started as a game might just lead them to something real…if the Red Thread Rock has anything to say about it.