The crew of Pink Dwarf are being pursued by a robot repo man, who has come to repossess Lister's breast implants. When they come across a Shopping Centre in space called Unicorps, it may just have what they need to save Lister's perfect tits. Kochanski is amazed when he discovers that Unicorps is home to a GEMILF, a Genetically Engineered Mother I'd Like to F*%k. But Unicorps may have plans of its own.