Story plot:

Rusty, a small but determined train, is often overlooked by the bigger, faster engines. When the main line suddenly becomes blocked and a critical delivery needs to be made, Rusty steps up to the challenge. Along the way, Rusty navigates narrow tracks, steep inclines, and tricky turns, proving that even the smallest train can accomplish great things. What unexpected hurdles will Rusty face, and how will this little train’s courage inspire the other engines?