Gymnastics payback

Mia Hernandez's middle school gymnastics team, the Ridgefield Rams, are the defending champions, and this year they have a new coach, one who was once a gymnast for their arch rivals; but a series of increasingly dangerous practical jokes begins to happen to their competitors, and it starts to looks like someone from the Rams is trying to sabotage the competition--Mia suspects Allison, a girl who always wants to finish on top, but she needs to prove it.