The International Agents of Intrigue are back in action!The twins are looking forward to the beginning of the school year and the Friendship Cup international soccer tournament taking place in their hometown of Boston.When new student and Brazilian soccer star Mariana joins the school team, suddenly the twins' are challenged on and off the field. Then the Golden Ball trophy, awarded to the best soccer player in the world, is stolen and the twins know they have to take the case. They just didn't expect an international mystery to land in their own backyard.Now Pen & Quin have to choose: help their team win the soccer tournament or help their new friend find the stolen trophy and escape the thieves who took it.Soccer, art and technology collide in the Pen & Quin's second international mystery.