Lost rainforest

Caldera has forever been divided into those animals who walk by night and those who walk by day. Nightwalker panthers, like young Mez and her beloved sister, have always feared daywalkers as creatures of myth and legend. Until the eclipse. Now Mez has discovered that she can cross the Veil and enter the daylight world. Her magical power has unknown depths, but she must rush to discover it after a mysterious stranger arrives at her family's den, bearing...

"When the shadowwalkers were victorious in their battle against the Ant Queen, they hoped their work to save Caldera was done. But the rainforest has begun to rumble. Rumi, a scholarly tree frog who can control the wind, must bring his band of animal friends to face the greatest danger they've yet encountered--the giant volcano beneath the jungle itself. While the volcano roars, rumors of a mysterious evil blanket Caldera--the Elemental of Darkness...