The Crystal

When Fatty and his sister George decide to surprise their scientist father by bringing him lunch at work, they, along with their friend Izzy, look on as he disappears from his lab in a flash of light. The kids grab the crystal that controls their father's time machine and flee from the evil woman their father was working for. The kids quickly discover the crystal's ability to freeze time and seek out the help of their aunt Kath and grandfather Bert.