The Minotaur

Matt, the father of Cleo and Alex, accidentally disappears into a cyberworld. Later, Alex also disappears into a cyberworld just by touching the computer screen. Cleo sees him disappear and even sees everything going on in the mythical world he went to. Alex does come back, and they realize what must have happened to their father. Cleo and Alex decide they are going to have to go back to find their father.