Larry discovers his estranged sister, Kitty, has committed suicide. He recounts a fateful day, when the two were children playing in their family's barn in rural Nebraska.

With their parents not home, they play a forbidden game, taking turns climbing to the top of a ladder in their barn and leaping from a crossbeam seventy feet (21 metres) in the air down into a haystack. The ladder is old and unsafe, but that is part of the thrill. On his last turn, Larry realizes that the ladder is on the point of letting go. By the time he lands in the hay, Kitty is already climbing up again. The ladder breaks, leaving her clinging to the last rung. Larry piles hay below her. When Kitty cannot hang on any longer, he tells her to let go, and she does. The hay breaks Kitty's fall and saves her life, leaving her with only a broken ankle. Larry is astonished when Kitty tells him that she hadn't looked down before letting go, so she didn't know about the hay. She had simply trusted him to save her.

Kitty grows up into a beautiful woman; she is supposed to attend business college but, in the summer after graduation, wins a beauty pageant and marries one of the judges. After the marriage fails, Kitty moves to Los Angeles, landing some roles in B-movies and some modelling shoots, and marries again, only to have this marriage fail as well. Eventually, Kitty ends up working as a call girl. Meanwhile, Larry is too wrapped up in his own burgeoning career as a high-priced lawyer to come to her aid, brushing off her many letters asking him to visit. He is now left with a newspaper article of Kitty's suicide ("Call Girl Swan Dives to her Death"), and her final letter, sent two weeks before she died, which reads, "I've been thinking about it a lot lately... and what I've decided is that it would have been better for me if that last rung had broken before you could put the hay down". Larry says that this would have been enough to make him come running. Unfortunately, he had neglected to tell his sister he'd moved, and the letter was not forwarded in time.

Larry relates that the farm where he and his sister grew up was in Hemingford Home, Nebraska. This is the town that Mother Abagail lives in during The Stand. It is also the town next door to Gatlin, the location of "Children of the Corn", and appears in It to introduce Ben Hanscom. It is mentioned in Cell. "1922" from Full Dark, No Stars also takes place in Hemingford Home.

• Stephen King short fiction bibliography

• The Last Rung On the Ladder at IMDb  
• Stephen King Short Movies
• NESCom Adaption Website
• Official 2011 Trailer