A hug and farewell. Another hug, another farewell.
These actions are repeated over and over by the two robots, who are not permitted to step beyond the rail.

These robots were deliberately made ridiculously large. The story is similar to a low-rated soap opera in that anyone could predict what would happen next. By utilizing a computer and very precise motor, however, these robots will repeat the story over and over again with faultless precision until they become demolished.
The number of times these robots hugged are indicated inthe digital counter of the controller section, and the number will remain as a meaningless record even after these robots are gone.