Arthur wants to play Deep, Dark Sea on the computer every chance he gets. He's hooked! When his mother leaves for work and asks him not to touch the computer, Arthur can't resist the temptation. Disobedience leads to disaster when Arthur and his friend Buster both reach for the mouse -- and the computer screen goes blank! Will Arthur be able to fix the computer before his mom gets home from work? Once again Arthur, D.W., and friends lead us on a hilarious adventure kids won't want to miss.