"Betty is a thumbsucker. She often finds a quiet place to have a peaceful time with her thumb. But it is always hard to find a suitable place. She enters an empty classroom to have some private time, but unluckily for her, two guys also enter the same room.

Betty sometimes visits a small and little-known park because there are few people there. One day, in the park, she finds an abandoned baby carriage. It is filled with a pile of earth and other odd items, such as a rag doll and a Chinese propaganda poster. Obviously, this seems weird, but it also looks like there is a story behind it.

Finally the owner of the carriage appears; a woman. It is hard to figure out who she is, but she also seems to have a special story with the carriage and her baby. At the end, Betty and the woman meet in the park. It seems that they share something special at that moment. "