A group of friends get together to spend a weekend at an old beach hotel they used to frequent as teenagers. During this weekend, all of the group's old tensions and secrets resurface. On the last night, Flor disappears in the sea. The next day, the prosecutor Eloísa Guerrero discovers the next day that Florencia's lifeless body, returned by the ocean, has a stab wound. Flor did not drown. Someone murdered her and Guerrero is sure that the culprit is among her friends.