Ben and Rachel can't believe their eyes when they find a hidden underground vault at the bottom of their garden. Inside are two frozen figures, a boy and a girl, whose scientist father left them there in cryonic suspension over fifty years ago. Then Rachel accidentally presses a button, and somethin...

Ben and Rachel can't believe their eyes when they find a hidden underground vault at the bottom of their garden. Inside are two frozen figures, a boy and a girl, whose scientist father left them there in cryonic suspension over fifty years ago. Then Rachel accidentally presses a button, and something incredible happens . . .