Minnie (Bel Powley) is a 15-year old girl growing up in 1970s San Francisco. Her mother Carol (Kristen Wiig) is a shallow hippie who spends most of her time not raising her daughter or setting any boundaries, since she is either too drunk or too high, or both. Minnie is a horny teen and keen to explore, but she considers herself too ugly to possibly be considered attractive by anyone. When her mom’s boyfriend Monroe (Alexander Skarsgård) in one of his many moments of weakness tells he she looks pretty, ever-horny Minnie goes in for the kiss.