A cat adjusts to its new home in an apartment, high above the ground, after living in a house.

A little boy out for a walk with his family stops to show a building doorman his new "bot": "I have a bot!" Only he doesn't have it for long, because it floats up out of his hands like an escaped balloon. "Stop! Bot!" Springing to action, the kind doorman runs up to each floor of the building to try and catch it -- along with the help of each floor's resident. But while everything looks normal at first, every floor (and resident) is a little more...