Power button

"Truly's parents are arguing all the time, so they've dropped her off with her aunt and uncle. Her cousin Kaz has a big imagination but he's not the best at making friends. Maximo Skulldigg gets bullied by his older brother--plus, he has to conquer Kaz and Truly's home planet. It's a good thing Kaz and Truly just uncovered a family secret. When the cousins find a hideout full of strange treasures near Kaz's house, they slip on wristbands that summon Trinn Cyclo--a space knight! And soon, he may be Earth's only hope"--Provided by publisher.