As part of their class on mobility in France, the Seconde students were asked to become land developers by inventing their own high-speed line. High-speed rail in France consists of a network of high-speed lines (LGV) on which high-speed trains run: TGV inOui and Ouigo brand trains for national connections, but also Eurostar, Thalys, Izy, Lyria, ICE and AVE for international connections. This network is still essentially star-studded around Paris. The mission of our geographers was therefore to imagine lines of more than 500 km without passing through the capital. A challenge brilliantly met and presented in the form of a storymap like the one presented here.