Slaves to a Voice (Elementals, #1)

Ferno, god of fire, has a problem. His stars are dying. Enlisting the help of Fross, god of snow and ice, a deity he's already in love with but knows that their union can never work, he and Fross are flung into a dastardly plan to destroy all things Elemental. Ferno meets an old foe, Ibi, who's on a revenge mission, determined to destroy everything Ferno loves...and put the Elementals out of business. Heading for Igneos, a volcanic world whose core has cooled, Ferno meets Moth, an Enigmuss worker. He and Fross fall headlong for the cutie, and in their Enigmuss disguise are able to kiss one another for the first time, setting sparks flying. In the midst of trying to reverse the weapon Ibi's set in motion, Ferno, Moth, and Fross must figure out a way to co-exist after their mission is completed... if they survive Ibi's murderous plot.