Travel Glasses (The Call to Search Everywhen, Book 1)

Calla Winston falls into a world of worlds after meeting Valcas, a time traveler who traverses time and space with a pair of altered sunglasses. He offers his further protection in exchange for a promise. After learning that his search for her was no mere coincidence, she tracks down the inventor of the Travel Glasses in hopes of discovering more about Valcas' past and motivations. With Valcas hot on her trail, Calla hopes to find what she's looking for before he catches up.