Project Sleep

Eight people, paired off into groups of two, get dragged into an endless dream by a goddess who needs their help to fend off a prophecy of doom. If not done in time, humanity will suffer an eternal apocalypse. 

This dream that they are in simulates the apocalyptic world they are attempting to prevent, in order to teach them both how to survive and give them a chance to figure out a solution.

They eventually all find each other and are travelling around doing what they can to survive while trying to solve the dilemma before them.