When Ridge, a time-traveling teenager from the future, gets trapped in 1999, he befriends Michael, a lonely twelve-year-old boy, changing the course of their lives forever.

In a world where matchmaking agency Kairos lets clients travel through time in search of love, Ada Blum must jump back and forth from the present to the past when she is torn between two men--small-time hood Henry Levison and State Senator Samson St. Laurent, who once ruined her life.

Special Forces are used to crazy ops, but orbiting a black hole to slow down time and fight Earth's dirty battles in the future? That's new, even for them. But that's the mission for Owen Quarry, Anaya Pretorius, and the rest of COG, a company of elite, disgraced, soldiers from around the globe. They join a defrocked company commander, an AI warship with self-confidence issues, and a crew of misfit troupers on a dizzying time-quest: prove the concept...

Twelve-year-old Rosie is a musical prodigy whose synesthesia allows her to see music in colors. Her mom has always pushed her to become a concert violinist, but this summer Rosie refuses to play, wanting a "normal" life. Forced to spend the summer with her grandparents, Rosie is excited to meet another girl her age hanging out on their property. The girl is familiar, and Rosie quickly pieces it together: somehow, this girl is her mother, when her...

Asha wants to win a super cool volcanic rock by solving the Great Volcano Challenge at school. So she and her best friend Baz use their magic stick to travel to Iceland in 1973 to learn from famous volcano researcher Katia Krafft. She's sure to be able to help them with their project, but she's got an eruption to observe and data to record--and ash, lava, and smelly gases are a lot scarier than a classroom. With safety concerns rising, Asha and Baz...

Computer class is off to a rocky start for Asha and Baz! They've been given a Coding Challenge and must correctly code instructions to send a digital frog across a computer screen. But they can't seem to figure it out. With their reputation as the smartest kids in their class at stake, the pair turn to their magic stick for answers. They use it to draw their coding problem in the sand and are transported back in time to 1941 Hollywood to meet Hedy...