"Honey I Shrunk the Kids" is a 1989 Disney comedy film starring Rick Moranis. It centers around a cooky inventor named Wayne Szalinski, his family, and their neighbors. At the beginning of the movie, his kids and the neighbor kids have an unfortunate run-in with one of his inventions. After hitting a baseball through the Szalinskis' attic window, Ron and Russ Thompson--the neighbor kids--go there to retrieve it. The Szalinski kids, Amy and Nick, lead them up to the attic where the baseball has been lodged in one of Wayne's inventions, a shrink ray. To their surprise, the baseball has also turned on the contraption and they walk right into the ray's path. The kids suddenly find themselves just a quarter of an inch tall.
Not knowing the kids are in the attic, Wayne heads up there to clean up. He unintentionally puts them out by the curb in a trash bag. When Wayne and his wife, Diane, cannot find Amy and Nick, they realize what has happened. They spend the rest of the movie searching for the kids. The Thomspons just chalk it up to Wayne's zany antics at first, but realize that Russ and Ron have also been shrunk.
While the adults frantically search for them, the kids make their way home to reverse the effects of the shrink ray. At less than an inch tall, the backyard is vast and wild, full of unknown and unexpected dangers. Something as harmless as the lawn sprinklers can be life-threatening. Their adventurous journey teaches them how to be strong and how to work together.