Nancroix is linked with Les Arcs, and is one of many villages that collectively make up Peisey-Nancroix, sometimes known as Peisey-Vallandry which refer to the two main stations, Plan-Peisey and Vallandry. These resorts have good nursery slopes and you find plenty of tree runs for when you want to take shelter!
You can get to La Plagne easily from Plan-Peisey on a cable car that takes you straight there, however the resort main focus, apart from a few shops, bars and restaurants, is the lift station.
Nancroix itself has some wonderful restaurants, including the Ancolie, but nothing much happens late in the evening in the village.
See more on Les Arcs here