Hallelujah Chance!

Yongsun rushes to Wheein and Taeyeon's wedding and throughout the ceremony, she suffers regret at never being able to articulate her feelings for Wheein. An unexpected guest who possesses time magic, Moonfairy, takes pity on her and allows her to "time slip" through certain photos in the wedding video that is prepared by Wheein's bestfriend Hyejin. This gives Yongsun a second chance to relive key moments in her life and touch Wheein's heart to change their present.