Synopsis: Threads of Time

A high school student named Moon Bin Lee is struggling with a recurring nightmare that is causing him sleepless nights. The dream entails him chasing a dark-haired girl into a deep abyss only to find himself stuck in the distant past for over a millennium. His confusion is overwhelming, making it hard to distinguish whether he is still the modern-day Moon Bin from Seoul or Sa Kyoung Kim, the offspring of a prominent warrior lineage from a thousand years earlier. As he searches for the truth about his identity and purpose, Moon Bin discovers a portal that enables him to travel through time and space. His acquaintances from the present take on different roles in his past, making it even harder to figure out who he really is. In addition to his school's kendo club fighting for the championship, Moon Bin also ends up in the middle of a territorial dispute in Mongolia, transported to a completely different time and place.