Super Short Summary

In The Great Treehouse War by Lisa Graff, fifth-grader Winnie Malladi-Maraj stages a standoff in her treehouse when her divorced parents' constant bickering and extreme competitions disrupt her life and jeopardize her school performance. She, along with her friends facing similar struggles, refuses to come down until their parents agree to listen and address their concerns, which eventually leads to improved family dynamics and self-advocacy. The novel includes themes of parental separation and family changes.