Vincenzo invites his friends Camilla and Furio to his father's home on the beautiful Amalfi Coast, one year after their adventure in Riccione. They embark on a summer vacation filled with love, friendship, and memorable moments in a charming village.

Under the Riccione Sun follows a group of teenagers who meet and spend their summer on the lively beaches of Riccione. As they navigate through friendships, relationships, and unexpected situations, they discover the true meaning of love and friendship.