Thomas remained unfriendly with Nia throughout their journey, but began to warm up to her after they rescued a crashed Ace and made it through the Amazon rainforest after some difficulty, continuing their journey through Central America and Mexico before reaching North America and the United States.

However, Nia decided to join him, much to his chagrin, having wanted to see the world herself. After Thomas thanked her for her help, he prepared to board a ship bound for South America and the city of Rio de Janeiro in Brazil. When they reached Dar es Salaam, Nia had a chat with her friend Kwaku, but Thomas interrupted before Nia could reveal that her shed was destroyed and she was looking for a new one. She later encouraged the trucks to sing to raise Thomas' mood during the journey, and to help soothe an elephant that tried to charge Thomas when it was blocking the tracks. However, she later arrived to help him over a steep hill when the trucks nearly caused him to slide back down it. Noticing how heavy his train is getting, she offered to help, but Thomas sternly refused, stating he could handle it himself. She first met Thomas in her homeland of Kenya when he stopped in her yard to collect more trucks to take to Dar es Salaam while in pursuit of Ace. Her kind heart and infectious enthusiasm never fail to win over others in the end. Nia is both thoughtful and practical and often comes up with very creative ideas. She is not afraid to speak her mind when she needs to. She is also driven by a strong moral compass and takes being fair and kind to others seriously. She is a real optimist with a great sense of fun. Nia is a tank engine from the African country of Kenya and a new member of the Steam Team on Sodor.

Sodor workshops jimdo