Set in a near-future society where humanity has colonized the depths of the ocean, players take on the role of a deep-sea psychological investigator. Tasked with unraveling the mystery of a sunken research vessel, players navigate through the unsettling marine landscape, interacting with eccentric underwater residents and uncovering dark secrets hidden beneath the waves. Each choice affects the protagonist's sanity, leading to multiple outcomes determined by the player’s decisions. Are you prepared to face the echoes of your own mind while seeking the truth?