TWELVE-YEAR-OLD ASTRID HAS ALWAYS DONE EVERYTHING WITH HER BEST FRIEND NICOLE. SO WHEN ASTRID SIGNS UP FOR ROLLER DERBY CAMP, SHE ASSUMES NICOLE WILL TOO. BUT NICOLE SIGNS UP FOR DANCE CAMP WITH A NEW FRIEND INSTEAD, AND SO BEGINS THE TOUGHEST SUMMER OF ASTRID'S LIFE. THERE ARE BUMPS AND BRUISES AS ASTRID LEARNS WHO SHE IS WITHOUT NICOLE... AND WHAT IT TAKES TO BE A STRONG, TOUGH ROLLER GIRL. --back cover