Faced with complaints and an accident, Lee Hong-jo investigates an ominous temple, coming up against the mysterious -- and cursed -- Jang Sin-yu.

Now in possession of the enigmatic box, Hong-jo finds that opening it is not as easy as it seems; Sin-yu asks Hong-jo for a favor.

Desperate for love, Hong-jo wonders if her spell was a success; Shin-yu later brings Hong-jo along on a trip for a spell of his own.

Faced with a mix-up, Sin-yu asks Hong-jo to reverse a spell; after coming to Hong-jo's rescue, Sin-yu remembers a clear moment from the past.

Sin-yu finds himself unable to resist the desires of his heart, but a third party complicates the matter; Hong-jo pursues a romantic interest of her own.

Amid a budding love triangle, Sin-yu struggles to remember what happened with Hong-jo; a much-awaited reversal spell doesn't go as planned.