Deep

A new kind of submarine threatens to win the war for the Nazis. Gaston, a lieutenant in the French army who had reached London, was responsible for stealing it and transporting it to the allies. For this mission, he will have to team up with Rico, known as “The Orain” and Félix and Jules, two little Parisian thugs who are languishing in prison. (allociné)

Joining the local resistance, the four meet Lucie. With her, they develop a plan to enter the naval base. Felix is assailed by a feeling of déjà vu: if they stay there, the Germans will attack the mansion and massacre every last one of them. (allociné)

Felix tries to convince his comrades to flee before the Germans arrive. At the same time, Franz joins Greta in the submarine and tells her of his failure to stop our heroes. Greta reveals that she has succeeded in developing a time machine but that, like any time travel, this can cause paradoxes... (allociné)

Felix's prediction comes true, sowing doubt in the team, while Franz sets out to find them. To save the mission, they attempt to kidnap Herbert, but the operation fails and the hostage is killed after revealing the existence of a time machine. (allociné)

Doubt and determination push the team to take Greta hostage and steal the submarine, but Franz traps them?: they find themselves at the controls of a U-boat full of Nazis, soon pursued by a second submarine. (allociné)

An underwater chase begins. While the heroes confront Franz to negotiate, a second U-boat contacts them: Gaston hears his own voice ordering him to torpedo himself. Is the submarine sunk? ; only Felix survives and activates the time machine. (allociné)

Aware of being trapped in a time loop, Gaston, Rico, Félix and Jules begin the mission again and seek to break the paradox, until Félix chooses to go to the future rather than return to the past. (allociné)

After seeing the future, Felix reveals that only one way exists to break the loop: their sacrifice, at the cost of their lives, to save the world. (allociné)