The Fault in Our Stars is a heart-wrenching young adult romance novel by John Green. The story follows Hazel Grace Lancaster, a teenage girl with cancer, who falls in love with Augustus Waters, a fellow cancer patient she meets at a support group. Together, they navigate the ups and downs of their illness while experiencing the joys and sorrows of first love. The Fault in Our Stars is a beautifully written and emotionally powerful novel that explores themes of love, loss, and the fragility of life.