In Finland, the first radio broadcasting experiments began as early as 1917 at Tampereen teknillinen opisto (Tampere Technical Institute). Radio operations in Lahti began with the founding of Lahden radioyhdistys (Lahti Radio Association) in 1925, and the following year, Oy Suomen Yleisradio (Finnish Broadcasting Company) was born. The documentary, directed by Heimo Palander for Yleisradio, examines the history of radio broadcasting focusing on the Lahti region.