14-year old Matias is being forced to spend the Midsummer holiday with his two adult half-sisters, at their friends' annual Midsummer celebration. Neither Matias or his sisters are excited about the plan - as a result of their parents' messy divorce, they have chosen their sides. At the summer cabin the rift between Matias and his younger big sister Liina tears open and reveals new secrets. A story about children who carry their parents' grudges.