Bonbon was a normal pony living in Ponyville. At least that's what everypony thought. Bonbon's real name is actually Sweetie Drops, and went undercover in Ponyville. Only one pony knows her secret, and that's her best friend, Lyra. But instead of returning to Canterlot for her next mission, Princess Celestia gives her a new assignment: to stay undercover in Ponyville . Now Bonbon goes through her first mission, with Lyra right behind her.