After hundreds of lonely years, a waste management robot finds a new purpose in life. With only a cockroach for a friend, he finds true love in another robot sent on a mission to Earth to see if it is safe for human life.

In the distant future, a small waste collecting robot inadvertently embarks on a space journey that will ultimately decide the fate of mankind.

For decades, Ralph has played the bad guy in his popular video game. In a bold move, he embarks on an action-packed adventure and sets out to prove to everyone that he is a true hero with a big heart. As he explores exciting new worlds, he teams up with some unlikely new friends, including feisty misfit Vanellope von Schweetz. Then, when an evil army threatens their world, Ralph realizes he holds the fate of the entire arcade in his massive hands....