A trip on the Swedish lake Mälaren by a 115-year-old steamboat. The journey between Stockholm and Mariefred takes 3,5 hours. The steamboat Mariefred was manufactured over a hundred years ago and is one of the last steam-powered vessels on the lake. The steam whistle sounds when Maja, as she is called in Mariefred, steers into the bay towards Mariefred. A fanfare for the summer! A journey through a breathtakingly beautiful landscape to the sound of the old steam engine's quiet but powerful inhalation and exhalation. A declaration of love for old shipping and a rich history of the steam engine.