Eigengrau [ay-gen-gr-ow ] - noun intrinsic light; the colour seen by the eye in perfect darkness. Rose believes in true love and leprechauns. Her flatmate Cassie is engaged in a fervent struggle against patriarchal oppression. Across London, Mark believes in the power of marketing. His flatmate Tim Muffin is engaged in a fervent struggle to get out of bed in the morning. When circumstance throws them together, all four have their beliefs tested to devastating effect in a biting black comedy about trying to connect in a city where Gumtree can sometimes feel like your closest friend.