While digging for fishing worms, Risto Räppääjä discovers a treasure, leading to an archaeological excavation at the site.
When an Iron Age ring from the excavation goes missing, it seems certain that the elusive Night Hawk, a grave robber, is nearby.
The story takes a surprising turn when Rauha Räppääjä becomes entangled in the case, and Lennart Lindberg ends up wrongfully jailed.
Determined to clear Lennart's name, Risto embarks on an international adventure to track down the Night Hawk.
[2][3] Filming took place in summer 2015, including scenes shot at Villilä Studios in Nakkila, Herrankukkaro in Rymättylä, and the old town of Naantali.