Uneasiness

"Run away. Run fast and far so they won't catch you"

"Just let me go. I don't want to be with you anymore"

"My love, I'm obsessed with you that I never want you to go Darling"

Seventeen members and Thysimarine(their fiance's group) go for the party. Somehow, Haesoo, Ririn and Joohyeon feel uneasy like it's something wrong. But Joohyeon ended up witnessing a hidden truth. The truth her friends should know. Will she able to save them or end up messing up things?