Tayo, Rogi and Lani get into a fight over who has the toughest round at work. They follow Gani's suggestion of switching rounds and the three do their best on each others' routes. However, they all end up making the passengers unhappy.
On the way back home they meet Gani, who is broken down on the road. Gani's passengers ask them to finish his rounds for them and the three recommend each other as the best bus for the job. Now that they understand that they all have different strengths, the young buses promise to never fight again.