25 of the Saddest Movies on Netflix, From "Marriage Story" to "Irreplaceable You"

A young boy named Conor whose mother is dying of cancer encounters a talking tree in this heart-wrenching tale. Struggling with nightmares and terrified of his mother's death, Conor and the monster embark on a journey of storytelling and destruction as he attempts to cope with his mother's illness and fears about his future.

Watch "A Monster Calls" on Netflix.