The Pendragon Adventure by D.J. MacHale

Everything changes for teenager Bobby Pendragon when he discovers that he, as well as his two best friends, Mark Dimond and Courtney Chetwynde, must prevent the destruction of their own world as well as others.

This boxed set includes The Merchant of Death, The Lost City of Fear, The Never War, The Reality Bug, Black Water, The Rivers of Zadaa, The Quillan Games, The Pilgrims of Rayne, Raven Rise, and The Soldiers of Halla.