Three generations living under one leaky Wellington roof in 2003, all on the brink of transformation. Sixteen-year-old Cassie is all bravado and vulnerability, drifting into risky territory as she searches for validation in all the wrong places. Her mother Maxine, 52, a formidable single-mother filmmaker on the brink of a long-awaited breakthrough, is finally offered a greenlight - if she can just land a star. Holding everything together is Huia, Cassie’s grandmother, 80, whose life has been defined by quiet service to family and a private obsession with raising monarch caterpillars, dreaming of one day witnessing the legendary butterfly migration in Mexico. But when Huia’s mind begins to fail her, the family is thrust into chaos. Can the maternal line hold together while everything is throwing them apart?