A group of estranged friends reunites after years apart, drawn together by a shared curiosity about a mysterious tower that has appeared overnight on the outskirts of their hometown. Rumors say that the tower holds untold power but warns that only those brave enough to face their deepest regrets can reach the top. Intrigued and desperate for answers—both about the tower and themselves—they enter, only to discover that each floor brings them face-to-face with a painful, unresolved moment from their past.