Lightfall. Book 1. The Last Rays of the Sun

The first book in the "Lightfall" series introduces Bea and Cad, two friends who are trying to save their world from falling into eternal darkness.
Deep in the heart of the planet Irpa lies the House of Tonics and Elixirs for... the Salted Pig, the home of the wise Pig-Wizard and his adoptive granddaughter Bea. As the keepers of the Eternal Flame, they live a quiet and peaceful life, creating medicines and potions for the people of their once-prosperous world.
All this changes one day when, while wandering through the forest, Bea meets Cad, a representative of the Galdurians, an ancient race thought to be long extinct. Cad believes that if anyone can help him find the missing, it's the Pig-Wizard.
But when they both return home, the Pig-Wizard is nowhere to be found: all that remains is a jar of eternal flame and a mysterious note. Fearing for the safety of the Pig-Wizard, Bea and Cad set out across Irpa to find him, as danger breaks through the shadows into the light.
Will these two unexpected friends find their beloved Pig-Wizard and prevent eternal darkness from engulfing their world? Or has Irpa truly seen its last sunrise?