When the Stanton kids take a trip in the Time Machine into the year 3010, they meet up with the Troikas who are intent on creating perfect human beings. It is then that the children are forced into a race against time. The year 3010 is not all they bargained for.
The Stanton kids once again return to the houseboat. This time, they travel back in time to 1870 where they discover their old enemy Mr Powers is a wanted bushranger. In a race against time, they try to outwit him and return him to 1960 - this time with no possible way of escaping!
While holidaying in a houseboat in the middle of a dried lake bed, the Stanton kids, along with their cousins, find a Time Machine.
Somebody is using the device for their own evil purposes...
The children must travel backwards and forwards in time as they strive to outwit the culprit and his crazed plans.