When Elizabeth finds that Verity and Garth can't meet her exacting standards as personal assistants, she decides to create a self-learning artificial intelligence program to do the job instead. She calls it Max - and it doesn't take her long to realise that she's created a monster. Max soon decides that he alone knows what is best for Elizabeth and keeps her prisoner in her own lab. He attacks Toby via his computer and spies on Verity and Garth.