Ever17 is the story of seven people who come to be caught inside the submerged marine amusement park, LeMU, 51 meters underneath the surface. Amid an obviously typical day at the recreation center, an occurrence happens, putting half of the office submerged. The way to the surface and the correspondence lines are cut off. What's more, LeMU is under steady ambush by serious water weight, constraining time to discover a way to get out to 119 hours. Getaway is not by any means the only concern, be that as it may; numerous inquiries emerge with regards to the authenticity of the mishap and regardless of whether those caught there were brought there for a reason. As the circumstance develops more edgy, the general population caught inside LeMU develop nearer. They start to reveal the responses to puzzles about themselves, LeMU, and the circumstance itself. As the end of LeMU becomes closer, the riddles and connections produced by the circumstance become further. At last, it is up to the characters to get by, as well as to find reality behind LeMU and themselves also.