This is based off of the new Bionicle line up.
Tahu, Gali, Lewa, Kopaka, Pohatu, and Onua have arrived on an island known as Equestria. The locals are, oddly, not of Bionicle origins. But in the dark reaches of the land lies an evil long since forgotten by the creatures of the island.
The artist for the piece of fantastic art for the cover image was Rubtox on Deviantart. Go check them out.