Percy Jackson and the Chalice of the Gods by Rick Riordan

Percy is back at Camp Half-Blood, but this time the quest isn’t to save the world—it’s to earn college recommendation letters from gods. Tasked with recovering the lost Chalice of Ganymede, he’s joined by Grover and Annabeth on a more personal, but no less perilous, adventure. This lighter, funnier story brings back the classic trio and rekindles the charm of the original series. Chalice of the Gods is a nostalgic, breezy return to the world fans love.