Professional soldier Markus is forced to return home to care for his daughter Mathilde when it turns out that his wife has been killed in a tragic train accident. While they are still in deep mourning, data analyst Otto rings the doorbell. He survived the train accident and, together with his eccentric colleague Lennart and their even more eccentric buddy Emmenthaler, has concluded that the train did not crash for no reason. They decide to investigate further and it becomes clear to Markus as well that there has been an attack. The men turn out to be angels of avengence and the mission leads to results. Although they might not be the results they hoped for..