Ada, a reserved young woman with a passion for entomology, travels north with Marissa, her free-spirited musician girlfriend. She's finally meeting the three brothers who helped raise Marissa: the paternal Ozzie, sensitive Arthur, and wild child Wren. As Marissa and her kin settle into their familial dynamics, Ada finds herself on the outside looking in. Desperate to make a good impression over the course of a weekend packed with fun and frivolity, Ada instead struggles to find common ground, opening fissures in the one relationship she needs the most.