A young girl named Mary, whose family has a cherished Halloween tradition of carving jack-o'-lanterns, is devastated when a busy Halloween night prevents them from carving their pumpkin. The forgotten pumpkin eventually falls from their terrace and shatters, but its seeds secretly take root. The following summer, Mary discovers a surprise vine that grows four new pumpkins, which she nurtures with excitement until they mysteriously vanish just before Halloween. After a frantic search, she finds them with the building superintendent, Lenny, leading to a compromise that allows Mary to finally fulfil her dream-carving four brilliant jack-o'-lanterns that light up the entire city with their glow, beautifully continuing her family's special tradition