Around the time of Oliver, Isabel, and Toad's arrival on Sodor, the Fat Controller was in the process of re-opening the Little Western line between Tidmouth and Arlesburgh. He assigned Oliver and Duck to the line, but the only coach was Isabel. The Fat Controller was able to rescue three more autocoaches like Isabel. Two of the coaches, Alice and Mirabel, became Duck's coaches while Dulcie joined Isabel and Oliver.