Two teens, both who have different cancer conditions, fall in love after meeting at a cancer support group. Hazel and Augustus are two teenagers who share an acerbic wit, a disdain for the conventional, and a love that sweeps them on a journey. Their relationship is all the more miraculous, given that Hazel's other constant companion is an oxygen tank, Gus jokes about his prosthetic leg, and they meet and fall in love at a cancer support group.