The name is a pun: "dor 3" refers to both the third generation, i.e., grandparents, and the 3G technology of cell phones.
The TV series tells the story of Hasamba over 50 years after its creation, when they are around the age of 70.
The real story on Renen's father, was revealed in the first episode: Sunny Zorkin, CEO of Israel's largest cellular communications company, "Zorcom", grabbed it after guarding state secrets.
In a failed attempt to change his memoirs, escaping one of the scientists in order to Tamar Zehavi the information was shelved her all that much years.
But they're not alone: Several guys and girls of the younger and fresher generation: Yuval, Luda, Iggy, Chofni and Renen find themselves involved and become Hasamba's third-generation counterparts.