The father of Soto Alto's goalkeeper registers the team for the International Children's Soccer Tournament held in the coastal town of Benidorm during the summer, and since he is a travel agent, he personally takes on the transportation of the nine children and their two coaches. Everyone treats this trip like an excursion, just for the experience of participating in the tournament, as Soto Alto is the weakest team participating and has no chance of advancing. But does luck have a different opinion? Because how coincidental are the own goals that will bring them to the final? And the Soccer Kids, what fraud will they try to uncover this time? What adventures will they embark on to solve the new mystery? And then, how will they show their character's kindness and sense of justice against Kronos, the largest children's soccer team in the world?