The depth trap
You board the Nautilus. During your sleep, all the members including Captain Nemo have disappeared. You have one hour to initiate the automatic ascent procedure before your air supply runs out.
Today you board the famous Nautilus, the underwater ship commanded by Captain Nemo. You spend the day on board and go to bed after dark.
A noise wakes you up a few hours later. As you look around the ship, you discover that all the crew members, including the captain, have disappeared! Trainees and sole masters on board, you are trapped in the waters!
To escape, there is only one way out: trigger the automatic ascent procedure. To do this, you will have to go through a number of mechanisms.
But hurry, because the ship is underwater and your air and fuel reserves will run out within an hour.