Following a misjudgement by its ambitious young captain, a German WWI U-boat is forced to wait for a prolonged period on the bottom of the North Sea, facing the threat of enemy torpedo ships. This causes unprecedented physical and mental challenges for captain and crew.
| Actor | Role |
|---|---|
| DDaniel AndersonOberleutnant zur See Arthur Metz | Oberleutnant zur See Arthur Metz |
| AAtilla AkinciSteuermann Johannes Nierlich | Steuermann Johannes Nierlich |
| MMichael WagnerObermatrose Frits Thomas | Obermatrose Frits Thomas |
| SSimon StacheMatrose Hermann Wolff | Matrose Hermann Wolff |
| PPaul VittyMarIngAsp Artur Breidenbend | MarIngAsp Artur Breidenbend |
 Joshua LeeseBootsmann Daniel Siebert | Bootsmann Daniel Siebert |