An information processing system disclosed includes a controller. When the controller detects that a first user and a second user have been separated to become lost to each other in a specific area, it determines the location of the first user using data that links the first user and the second user and images captured by a plurality of cameras provided in the specific area. Then, the controller executes the processing of providing an entertainment to the first user at the determined location of the first user and providing information about the determined location of the first user to the second user.