Jordan (AKA CaptainSparklez) gets sent to Equestria after a weird incident with his modded survival. And the only way to get back is to find the missing elements of Harmony, scattered in different dimensions.
Playing video games, check. Talking with friends, check. Being transported into the lands of Equestria with video game like powers and some evil plot unfolding...uh check.
Drake doesn't know how he ended up in a strange world. He recognizes the place, but finds himself in the mysterious game of EquestriaCraft. However, he has no idea how terribly dangerous it is.