Lyra and the Secret Agent Ponies

Lyra thinks she knows everything about her best friend Bon Bon, until a mysterious pony called Agent Furlong reveals that Bon Bon has secretly been working for a covert monster-catching league all along. When Bon Bon needs backup, Lyra has only one option: go undercover alongside her and help protect Equestria from a changeling threat. This edition retells the S.M.I.L.E. story for readers discovering it fresh.