My Little Pony: Lyra and Bon Bon and the Mares from S.M.I.L.E. by G. M. Berrow

When a mysterious pony named Agent Furlong pays Bon Bon a visit, Lyra discovers that her best friend is actually an operative for a top secret monster-capturing league. To prove their friendship is forever, Lyra and Bon Bon will have to go undercover together and protect Equestria from the ongoing changeling threat. © 2016 Hasbro. All Rights Reserved., When a mysterious pony named Agent Furlong pays Bon Bon a visit, Lyra discovers that her best friend is actually an operative for a top secret monster-capturing league. To prove their friendship is forever, Lyra and Bon Bon will have to go undercover together and protect Equestria from the ongoing changeling threat