Panic breaks out when the group realizes they're trapped in the forest. They'll have to survive here much longer than expected. What if Eloi's visions are the only thing that can get them back home?

Zoé and Sammy try to crack the code to open the secret door, while Antoine tracks down the stranger Éloi saw. Mathilde and Éloi, convinced she can help them, try to approach her, but the stranger's suspicion complicates everything.