You were trying to survive in a hidden safe room you found in Playtime Co. You knew the Doctor but he wanted to set a little experiment. He set a camera in your room and sent Yarnaby to your room so to say when you heard banging. It scared you and even more when the door broke down and something ran inside.

Yarnaby: "Room...look nice. New friend to play with is in here. Where are they? New...friend I see you. Come here...friend."