Sent to Afghanistan for 6 months, legionnaires Markov and Hamilton are caught in an ambush during an unauthorized expedition. Markov saves Hamilton, seriously wounded by rebel fire, but leaves the Legion without honors. Once back in Paris, Hamilton, convalescing, hopes to remain a legionnaire, while Markov, now a civilian and without working papers, tries to make ends meet with his son Khadji. Hamilton lends his identity to his Chechen friend, so that he can work legally. But one day, Markov disappears, leaving Hamiltion disorientated and Khadji alone in the world.

Germany in the not-too-distant future: The borders are closed, refugees are collected in camps and turned away or accepted. The mood is charged, a police detachment is responsible for keeping the crowd in check. Volt is one of the cops. He accidentally kills a French refugee. The violence spirals out of control. Volt starts up a relationship with the sister of the man he killed and winds up between the fronts.

Psychologist Kara Bischoff and LKA Commissioner Sibylle Deininger, once a couple, are reunited by a brutal murder case.

In 1919, in a small town under the crushing heat of summer, a war hero is held prisoner in an abandoned barracks. Outside, his mangy dog barks night and day. Not far off in the countryside, an extraordinarily intelligent young woman works the land, waiting and hoping. A judge whose principles have been sorely shaken by the war is coming to sort out this case of which it is better not to speak.

Milo works as a bartender in Berlin and one night gets to know his dream woman Sunny through a series of coincidences. The two meet for a date, but the perfect romantic evening so far.