Am Ende des Regenbogens.

After the all-powerful wizard Susnam Evyndd is defeated during battle with an evil clan of sorcerers, the world is plunged into darkness. If the spell is not quickly reversed, all plants will die off from lack of sun, until everything & everyone-is destroyed. Yet Evyndd's death sets off his last & greatest spell, transforming his household pets into humans. With Evyndd's instructions, the group sets out to return light to the world...but pursuing the missing light promises to be difficult & dangerous & carries no guarantee of success.