With the Wonderbolts hitting rock bottom, Spitfire decides to take advantage of Rainbow Dash's fame and skill for her own exploits in an effort to get the wonderbolts back on top and then proceed to crush Rainbow Dash's dream into the ground. However, unbeknownst to her, Soarin; who has a romantic interest in Rainbow Dash; will find his loyalty lies more with the cyan mare more then his own captain very quickly.

Additional Information: This is an idea presented in the story "Above the Clouds by Lynked", where the wonderbolts have hit rock bottom in popularity and finances. The story in question is pretty much dead, but you can check out what's written here: Above the Clouds - Fimfiction
But let me make it clear that while I am using the same idea here, this is not the exact same story, going so far as to include a romance between Rainbow Dash and Soarin while also focusing on Rainbow Dash's most important characteristic: Her Loyalty and how it is only for those she trusts. Essentially the title of this story should tell you that much.

Warning: There's swearing involved in later chapters once Rainbow Dash finds out the secret Spitfire kept from the cyan pegasus.

Side note: Thank god there's a "Shadowbolt" tag that's not for Equestria Girls. I hate those specials.