Bond of a winter's night

Hana, who is half-Czech and half-Korean, is a student in Seoul. A month before Christmas, she accidentally bumps into the Grim Reaper at a market, setting a whirlwind of events in motion. The physical touch awakens a dormant bond of the red thread of fate. A glowing thread with seven knots tightens around their wrists, magically connecting them. For the thread to disappear, they must untie all the knots by midnight on Christmas Eve. To do so, they need to help the soul of a deceased person, trapped in the world of the living due to an unfulfilled wish, for each knot. If they don't succeed before the Moon Gate closes, they will both cease to exist.