An-ex convict nicknamed Al Capone, who spent six years in jail, tries to adapt in new environment. Members of the two rival gangs try to engage him in their new ventures, but he wants to make a new start with the girl he loves. At the same time, a young criminal who shares the same nickname replaces him in these actions.
Three stories are put together as an omnibus: 1) The adventures of a little girl named Zorica who tries to find her dog while her mother thinks she's in the kindergarten. 2) The clash between a group of boys with the superintendent of a building who doesn't let them keep a dog in the housing. 3) A group of boys play with a stolen revolver.