Young workers of the plant from the seaside town constantly travel to work by trolleybus number one, the driver of which, a pretty young Svetlana, finds new good friends among her passengers. At the insistence of relatives, Sveta leaves her job to go to college. But then she feels that in her life she began to lack the attention of those who needed her every day. Passengers are making every attempt, even the most desperate, for Svetlana to become a trolleybus driver again.