In this follow-up to Arthur and the Invisibles, our hero (Freddie Highmore) helps Princess Selenia (Penny Balfour) reach Necropolis, a lost city ruled by the evil Maltazard. Maltazard's minions and other nasty beings threaten their journey. But there's room for plenty of fun along the way, too. Mia Farrow, Robert Stanton, and Ron Crawford also lend their voice talents to this whimsical animated feature.