A summary of any sad story?

One example of a sad story is "The Fault in Our Stars" by John Green. The novel follows the love story of two teenagers, Hazel Grace Lancaster and Augustus Waters, who meet at a cancer support group. Both characters are battling terminal illnesses, and their relationship is filled with moments of joy and heartbreak as they navigate their illnesses and the challenges of being in love while facing their own mortality. The story ultimately ends with Augustus passing away, leaving Hazel to grapple with her grief and the uncertainty of her own future. The novel explores themes of love, loss, and the fragility of life, leaving readers with a sense of sadness and reflection on the complexities of human existence.