Great Scott! It�s a twisted time-travel tale of titanic tenure! In an attempt to get to the bottom of the mystery of the �demon,� Robin the Boy Wonder and the Supergirl of Krypton venture back in time to China circa 1600 B.C.-running headfirst into the ancient superheroes known as the House of Ji! Meanwhile, Superman and Batman are losing a race against time to save their fellow superheroes from the schemes of a new villain�one simply known as the Devil Nezha.