Introduction: To find her missing sister, Yeon Joo joins a mysterious dating reality show called MARRY. There, she encounters participants from all walks of life and is forced to complete one high-risk mission after another, each pushing her limits. As she gradually uncovers the hidden truth behind the show and begins to disrupt its carefully laid rules, MARRY turns to extreme measures to bring her under control. A dangerous game unfolds, where love and manipulation collide.