Book 2 in the electrifying middle-grade sci-fi trilogy by six-time Grammy Awardwinning musician, Academy Awardwinning filmmaker, and New York Timesbestselling author Ahmir Questlove Thompson and New York Timesbestselling author S. A. Cosby.

On the heels of their thrilling appearance inRhythm of Time, best friends Rahim and Kasia are back traveling through time inTime for a Change. Last time around, they were on their ownnow they are working with Aevum, a mysterious organization from the future that tasks them with averting disaster and safeguarding the flow of history.

The first assignment sends Rahim to Hawaii to recover a rock that Aevum insists is key to stabilizing the future. But things take a dramatic turn when he inadvertently jeopardizes the mission, thrusting him and Kasia into a web of intrigue populated by a diverse cast of time-travelers with their own enigmatic motives. There are doppelgngers from parallel dimensions. There are robots who may be allies but may be enemies. As Rahim and Kasia move like pinballs through time, they must navigate a treacherous path to unveil the truth and avert a devastating future across multiple realities.

Dynamic, richly written characters, a mystery that twists and turns through the corridors of time and the multiverse, interior illustrations, and crisp prose make for an infinitely readable sci-fi adventure that is sure to delight young readers.

An Academy Awardwinning and EMMY-nominated filmmaker, drummer, DJ, producer, director, culinary entrepreneur,New York Timesbestselling author, and co-founder of the Roots,Ahmir Questlove Thompsonis the unmistakable heartbeat of Philadelphias most influential hip-hop group. He is the musical director forThe Tonight Show Starring Jimmy Fallon, where the Roots serves as the house band. Questlove made his directorial debut with the Academy Awardwinning feature documentarySummer of Soul. He has written multiple books, including theNew York TimesbestsellersMo Meta Blues,Creative Quest, Music Is History, and his first childrens book,The Rhythm of Time. He is the publisher of AUWA Books, an imprint of MCD / Farrar, Straus and Giroux.
S. A. Cosbyis aNew York Timesbestselling writer from southeastern Virginia. He is the author ofAll the Sinners Bleed, which was on more than forty Best of the Year lists, including Barack Obamas, as well as Edgar Award finalistRazorblade Tearsand Los Angeles Times Book Prize winnerBlacktop Wasteland. He has also won the Anthony Award, ITW Thriller Award, Barry Award, Macavity Award, BCALA Award, and Audie Award and has been longlisted for the ALA Andrew Carnegie Medal for Excellence.

• Publisher: Farrar, Straus and Giroux (BYR)
• Publish Date: February 17, 2026
• Pages: 304
• Language: English
• Type: Hardback
• EAN/UPC: 9780374393175
• Dimensions: 209.6 X 136.5 X 1.0 mm | 1.0 pounds
• BISAC Categories: Kids