August 1943: Franz Buchner is in action with the U-949. An informer on board divides his crew. The Hoffmann family gathers in Berlin to attend the premiere of a film about Klaus.

Das Boot Season 4 Episodes...

• s04e01 - A German Hero
• s04e02 - Target Captured
• s04e03 - My Brother's Keeper
• s04e04 - Frontlines
• s04e05 - Point of No Return
• s04e06 - Nothing Personal

Das Boot Show Summary

An inexperienced U-boat crew has to survive a secret mission and a young German woman is torn between loyalty for her home country and the French resistance in the WWII drama.