Rainbow Dash becomes a master magic-eating vampire, forms her pack, and works on managing magic with her new role. Friends help out of course. It's actually kinda awesome, all things considered.
Rainbow dash is going to perform her first sonic rainboom as a wonderbult, but suddenly gets injured and has a mental brake. Turns out the stallion who helps her get through it, is Soarin.
Soarin goes into a deep depression over what he said to Rainbow Dash about banning her from the Wonderbolts during the events of "Rarity Investigates."