In the midst of a war with the Crystal Empire, a lone night ranger stumbles upon a strange unicorn, a mare who claims to be the cause of all their pain and suffering.
A crash seemingly robs Rainbow Dash of her memory, but that doesn't stop her from saving Scootaloo or spending a magical afternoon with the filly. But is everything what it seems?
Rainbow Dash expected her first day working in Ponyville's Weather Team would be dull. But when a little filly sneaks in, her day takes an unexpected turn.