Arthurs quest takes him into the heart of the forbidden city ... Arthurs backyard looks like a peaceful, ordinary garden -- if you are human-sized, that is. But if youre half an inch tall, like the Minimoys, this backyard is a vast world where fierce battles are fought, ferocious monsters are faced, and one evil wizard, Maltazard the Cursed, rules with cruel power from his terrifying stronghold: Necropolis, the forbidden city. Now ten-year-old Arthur -- magically transformed into a Minimoy -- and his Minimoy companions, brave Princess Selenia and mischievous Prince Betameche, must somehow find a way into this forbidden city. Their mission: to rescue Arthurs grandfather, recover a stolen treasure, and save the land of the Minimoys once and for all, before its too late. But once youre inside the forbidden city .... can you ever get out again?