STELLA (Haley Lu Richardson) and WILL (Cole Sprouse) are seventeen years old and they are falling in love. The flirting in the hallways, the slipping away from adult supervision, the tension of every shared moment building toward something unknown but impossibly exciting. Complicating matters, their romance must exist within the boundaries of their lives as cystic fibrosis patients in the same hospital, where strict rules dictate that they must stay five feet apart at all times.
WILL is part of an experimental drug treatment but spends his days giving NURSE BARB (Kimberly Herbert Gregory) and DR. NOOR HAMID (Parminder Nagra) the slip. STELLA's best friend POE (Moises Arias) works to keep her spirits high while she waits on a matching organ donor. She passes the time with an obsessive adherence to her prescription regimen and by creating videos about her friends and their lives for her YouTube channel.
As the connection between WILL and STELLA intensifies, so does their willingness to defy the rules that govern every moment of their lives. Teenage attraction gets complicated when touching is not an option, but the pair quickly learns that the possibilities are endless, even if it means staying out of reach. Living on borrowed time means making every moment count, and as the challenges mount, WILL and STELLA will discover a strength within themselves and each other that transcends the distance between them.