Enter the gym
From Create Your Own Story
After entering the gym you go through the school area to get to the schoolyard. Once you enter you are told that you must beat two trainers in order to challenge the Gym Leader: Cheren. You battle the two trainers without a sweat, but even when you have rare and strong Pokemon it is still hard to win a gym battle when they are all level 7! The previous battles have hurt your Spiritomb and your Treeko (Right now they are the best on your team) but you are a bit away from the nearest Pokemon Center but so close to Cheren! What do you do?
