A pegasus with amnesia teams up with several other ponies in order to stop an infection causing everypony in Equestria to became an Alicorn or Pegasus.

A 14 year old from New Zealand accidentally creates a pony version of himself. The pony gets unwillingly sent to Equestria, where it finds that everypony in PonyVille is being pegasusified by M.A. Larson.