Katie, a 17-year-old, has been sheltered since childhood and confined to her house during the day by a rare disease that makes even the smallest amount of sunlight deadly. Fate intervenes when she meets Charlie and they embark on a summer romance.

One day after purchasing their first real adult pull-out couch, homebody couple Levi and Dillon's relationship is tested when an unexpected (and pungent) visitor arrives to stay the night.