The Big Knights Episode 4 - Time Protonosphere Episode Title:Time Protonosphere.Episode Description:Sir Doris's hamster wheel is squeaking. It has been squeaking all night keeping the entire castle awake. Sir Boris is determined to get it sorted and whilst he is busy, Sir Morris receives a strange visit warning him not to take the hamster wheel to a famous but mad scientist to mend. Sir Morris therefore forgets the warning and does the complete opposite and thus suggests to Sir Boris that they take the wheel to be fixed. On arriving at the mad scientist lab, chaos ensues and the boys end up changing history as they travel backwards through time.