While the robots are away, they're called "wall" because they clean up the trash. One day, a cockroach named Wall collects the garbage and turns it into cubes. He's a great friend to the robots, and they all hang out together. That night, they celebrate his 70th birthday. The next morning, he's excited to find something green and vibrant. He chases after it, but he can't figure out what it's all about. It's Eve. He follows her everywhere, but she doesn't seem to care. He tries to get her to wake up, but the hatch isn't open, so they go back to work.