The Ood bows. Mr HALPEN: That Ood. His Ood hands Mr Halpen a glass. He's called an Ood. DOCTOR: The snow will take care of that. Here at the Double O, that's Ood Operations, we like to think of the Ood as our trusted friends. Come on. He bumps into Sigma. The Doctor uses the sonic to open the cage of the Ood. Go on... Mr RYDER: It's a revolution. Mr Halpen and Dr Ryder return to the room where the Doctor and Donna are chained. DOCTOR: The Ood Brain. It's a shared mind, connecting all the Ood in song. Dr RYDER: But the process was too slow. Friends Of The Ood, sir. How's the hair loss, Mr Halpen? They turned him into an Ood?! The Ood are coming home.
Plan: A: Donna; Q: Who is with the Doctor when he lands on the Ood-Sphere? A: the Ood-Sphere; Q: What is the Ood's home planet? A: Ood Operations; Q: What company is selling the Ood as slaves? A: Friends of the Ood; Q: What group is Dr Ryder a member of? A: Dr Ryder; Q: Who infiltrated the company and lowered the settings on the force field? A: a revolution; Q: What do the Ood start when the giant brain is blocked? A: Halpen murders Dr Ryder; Q: What does Halpen do to Dr Ryder? A: his personal Ood; Q: What is the reason Halpen transforms into an Ood? A: Ood Sigma; Q: Who uses Halpen's hair loss medication to slowly convert Halpen into an Ood? A: Sigma; Q: Who promises to take care of Halpen? Summary: The Doctor and Donna land on the Ood 's home planet, the Ood-Sphere where a company called Ood Operations has been selling the Ood as slaves. A member of Friends of the Ood, Dr Ryder, infiltrates the company and lowers the settings on the force field which blocks the giant brain that telepathically connects all of the Ood. The Ood start a revolution. Halpen murders Dr Ryder, but transforms into an Ood because of his personal Ood, Ood Sigma, uses Halpen's hair loss medication to slowly convert Halpen into an Ood. Sigma promises to take care of Halpen. The Doctor shuts down the force-field, freeing the Ood.