When Equality 7-2521 and International were assigned stumbled on a hole sticking out of the ground on when pulled out they found out it was a man hole. They keep it a secret from the council.
When they take the road that goes outside of the city Equality 7-2521 come to recognize the golden one and following their daily routine. Eventually they came up with ways to communicate without causing suspicion.
They both come to realize that they weren’t like the others and share their feelings for one another.