Five years ago, on a dark night, Rose reached the end of the pier, looked into the water and jumped. She studied at Cambridge and was a brilliant student, but recently lost her father and fell into depression... All these years, Jar, Rose's boyfriend, cannot forget about her. He sees Rose everywhere - her face in the train window, her figure on the cliff. An unexpected meeting on the subway, a letter received and a diary suddenly found by Rosa's aunt radically change his whole life. Was it really so? Is Rosa dead? And if so, who is playing games with those she left behind? he digs, the more entangled he becomes. A dark world opens up to him, in which everything is not what it seems... Jar finds himself in the very center of an even more serious mystery, the solution to which should shed light on the events of that dark night. But won't this investigation threaten his own life?