Inga Danell's summer vacation is near. But unfortunately both Inga and her brother Acke have bad grades and are forced to study.Inga Danell's summer vacation is near. But unfortunately both Inga and her brother Acke have bad grades and are forced to study.Inga Danell's summer vacation is near. But unfortunately both Inga and her brother Acke have bad grades and are forced to study.