Aladár converts an old radio into a transceiver, and with the help of this he manages to contact MZ/X, who is none other than Öcsi, the 125-year-old great-grandson of Géza Mézga from the 30th century. While preparing for his high school graduation exam (80 primary and 40 secondary school are compulsory in their country), he stumbles upon his ancestors from the 20th century with the help of the time-dilation device. Géza is in big trouble, his television has broken down, and he seizes this great opportunity and asks Öcsi for help.