Aster Wood and the Lost Maps of Almara

Sickly Astor Wood is sent to his grandmother's for the summer where he will, no doubt, be miserable, friendless, and bored. He unexpectedly finds a magical portal to other worlds within his granny's attic and is soon whisked away to adventure and mystery. He's faced with the choice of being a healthy, heroic universal traveler or returning to his home and family on Earth. It seems the choice is made for him when he can't find the portal back to his grandmother's attic.