Max Sterling didn't mean to rewrite history. He just wanted to see if he could.

Fourteen years old, absurdly brilliant, and catastrophically impulsive, Max builds a time machine in his garage-and promptly disappears. Left behind: his best friend Nick, who's not built for emergencies, and Max's twelve-year-old sister Chloe, whose encyclopedic brain has no tolerance for nonsense.

Their mission? Track Max across time and bring him home.

Their first stop? The Ice Age.

Mammoths roam. Saber-tooth cats stalk. And the Clovis people, the continent's first inhabitants, hold secrets buried in bone and stone. But survival is only the start. With the machine's charge ticking down and something ancient watching from the dark, the trio must decipher cryptic clues and outwit a landscape that never meant for them to return.

And the Ice Age is just the beginning.

Across 25 pulse-racing adventures, Max, Nick, and Chloe will cross eras, outsmart tyrants, and protect time itself from those who would twist it.

Because time isn't just a destination.

It's a battlefield.

For fans of Artemis Fowl, Alex Rider, and The Mysterious Benedict Society-where genius, loyalty, and courage decide the fate of history.