The Spider Gem - Portal Chronicles 1
The plot centres around three Earth teenagers, Ashley from Oregon USA and two Welsh boy, Mike and Rhys. The teenagers accidentally trigger a magical force when they find and connect a magical pendant and ring. All three are thrown into the world of Portalia where they arrive in the city of centaurs, Eumor. Here they befriend a young female centaur and the centaurs agree to help the earthlings return home.
To do this they must join forces with the centau...