Before moving to Ponyville, Rainbow Dash and Fluttershy grew up with a pegasus named Triple Threat. Triple Threat helped them once when they were fillies, and the three have been close since. Unlike the 2 former pony, Triple remained in Cloudsdale, but came by invitation to Ponyville to be reunited with her foalhood friends, and meet their new friends. But the visit has more in store for her than she expected, a shocking truth that could change her life forever!