Season 3 follows the fortunes of a young U-boat crew as they engage in the Battle of the Atlantic, are hunted down by an obsessed Royal Navy Commander (Ray Stevenson) and are sent on a dangerous mission to the Southern Hemisphere. Together they form strong personal alliances under the command of Robert Ehrenberg (Franz Dinda).

A couple who fall in love and spend a joyful summer until they are captured by the Gestapo.

第二次世界大战中的德国，13岁的男孩埃勒斯因无人照顾进入了一家病院工作，但是他在那里却发现了令人震惊的事情（纳粹的纳粹安乐死计划），并与朋友们团结在一起，企图破坏这个计划，影片以孩子的视角展现了令人震撼的一段历史，以及人性的善恶，二战时超过五千名儿童死于纳粹安乐死计划。