While most of the crew tries to enjoy a rare moment of downtime, Doctor Maxwell discovers some previously undetected flaws in the station's systems. When her suspicions about these faults are proven right, the crew is forced to have a series of unexpected and difficult conversations. Plus, the Cybermen Appreciation Society, Cold Shower September, the master of the prank, everlasting funstoppers, and a big pink Heffalump that only you can see.