The summer before high school, Piper, Sophie, Isabella, and Honor are inseparable; by senior year, they barely speak. Piper is a popular party girl, Isabella is the editor of a feminist zine, Sophie pledges to stay a virgin until marriage, and Honor is a focused ballet dancer with a dream. When one of them suddenly passes away, they reluctantly put their differences aside and reunite to a complete a forgotten bucket list, empowering them to honor every day like it's their last.