Chronicles of Narnia ratings (Movie franchise)

Plot of the first movie: Four children from the same family have to leave their town because of the bombings of WWII. A women and a professor take the children to their house. While playing a game of hide-and-seek, the youngest member of the family, Lucy, finds a wardrobe to hide in. She travels back and back into the wardrobe and finds a place named Narnia. After going in twice, the four children go in together for the last time. They battle wolves, meet talking animals, encounter an evil white witch and meet a magnificent lion named Aslan. Will this be the end of their journey to Narnia or will they stay?