Black Water (2018)

A mysterious operative wakes up to a startling discovery - he is trapped on a submarine with no memory of how he got there. Desperate to break free, he enlists the help of a resourceful fellow prisoner and a young, inexperienced agent to unravel the secrets behind his predicament. As time ticks away, they must work together to outmaneuver their captors and uncover the truth before it's too late. Will they be able to escape the confines of the submarine and reveal the mastermind behind the setup? The clock is ticking...