One Day Twilight Sparkle and Spike the Dragon are summoned to Canterlot Castle by Princess Celestia to preform a not so small delivery to a researcher in Ponyville named Lock Hoof. Twilight Sparkle; alongside AppleJack, Rarity, Rainbow Dash, Fluttershy and Pinkie Pie go to Ponyville to look for Lock Hoof, they seek help from Lock Hoof's friend Blissful Melody, she also introduces them to more of Lock Hoof's friends who end up tagging along: Wind Howl, Stone Burst and Jack Strike. All of them go together to Lock Hoof's house just outside Ponyville to give him his delivery; as they help Lock Hoof with things around his house they discover a picture with writting on the back that might lead them to something Lock Hoof thought he never had: a family.