"I want to experience the dark sides that are in us humans, because those dark places are alive, they are life."
What is reality? What is play? Where are the boundaries? When does one merge into the other?
Tanja (Mira Gittner), Jessie (Marina Anna Eich), Anna (Sabine Krappweis), Marcus (Christoph Baumann) and Kai (Manfred Gebauer) go to a sealed-off former military barracks to play the "Great Game" - a game beyond any social norms and boundaries.
"As long as you have been outside, you have had to bow to the rules of society. Here, in the barracks of freedom, there are no rules. If you need them, create them."
Each of the protagonists has their own game, their own variation on getting advantage over the others: Jessie tries it through sexual seduction, Anna through the exercise of power, Marcus through sets of rules he enacts, Tanja by staying out of everything. Kai is the weakest link in the group and he becomes everyone's victim.
In search of the "Great Game", they become more and more entangled in their own interpersonal games and are slowly drawn into the devious niche of their "inner rooms". What begins as a harmless game ends in an all-too-real tragedy.
THE DARK SIDE OF OUR INNER SPACE is a metaphor on the "Great Game" we call life. A study of the dark side of our soul.
"I didn't give them any rules. They could create their own. They could have had such a wonderful, eventful, fun time. But they chose strife, intrigue, and ultimately death."