Toad Stands By is the twentieth episode ever made in Season 4.
When Oliver returns from the Works, the trucks, prompted by their ringleader, S. C. Ruffey, sing Pop Goes Old Ollie to spite him, and refuse to stop even when threatened by Thomas, Percy and Duck. Toad, fearing that the matter may escalate, asks to speak with Oliver and gives him an idea. Oliver, feeling a sense of responsibility, agrees with Toad. Oliver shunts Scruffey and his lieutenants and prepares to pull them, but S. C. Ruffey whispers to the trucks to hold back, and they do. Oliver, however, is determined and simply pulls S. C. Ruffey apart. When the Fat Controller scrutinises the remains, he attributes to to S. C. Ruffey's poor build, but tells Oliver to keep it under his dome. After the incident, the trucks becomes fearful of Oliver and whisper to each other not to anger him. S. C. Ruffey, who was repaired, wisely keeps his mouth shut.
- A bug can be seen on a truck in a close-up when the trucks sing.