Parallels

During a birthday party in a locked bunker in the heart of a forest, three friends, Romane, Victor and Bilal, go missing, forcing their fourth friend Sam to deal with his friends' inexplicable disappearance.

Victor and Romane are forced to learn to live with Samuel and Bilal's disappearance. Victor has a hard time with his parents after they seem to blame him for Sam's disappearance.

Four years later, Victor tries to persuade Romane to follow his plan to send them both back in time. Bilal gets snippets of memories of his "former life" but they're still too vague to make any sense.

Romane and Victor get a shock when they go back in time to a world they used to live in. Victor feels extremely bitter towards his parents, whereas Romane is overwhelmed with sadness and decides to try to comfort her mother.

Sofia tries to fathom the secrets of interdimensional travel. Victor becomes a loner. Feeling outcast, Samuel tries his hardest to fit into the group of friends. Sofia conducts a new experiment in the bunker.

Retz and Sofia try to devise a strategy, but nothing ends up going as planned. Sofia realises that she has to jog Bilal's memory, as he is the only person with the knowledge she needs to make the interdimensional journey a success.