The Frog King's Ransom

The spring rains have flooded a lowland forest, and now an intelligent giant frog styling itself the Frog King has seized control of the waterways. It demands "shiny tributes" from boats that pass through its domain, and it has taken several fishermen captive as honored "guests." Negotiate with the amphibian monarch, rescue the captives, and decide whether to dethrone or legitimize the new river ruler.