When his 8-year-old son is abducted, a widowed crime writer looks to his estranged father, a retired former police detective, for help, only to discover a connection with the decades-old case of a convicted serial killer known as "The Whisper Man."

Dora, Diego, and their new friends trek through the perilous dangers of the Amazonian jungle in search of the ancient and powerful treasure of Sol Dorado to keep it out of enemy hands.