Warning: The following contains SPOILERS for The Venture Bros: Radiant Is the Blood of the Baboon Heart.The biggest mysteries of The Venture Bros. series are explained in the long-awaited movie, The Venture Bros.: Radiant is the Blood of the Baboon Heart. The film picks up roughly three days after the events of The Venture Bros. season 7 finale, with a confused Hank Venture on the run and trying to solve the mystery of his mother's identity. The only member of the ensemble concerned with Hank's whereabouts is his twin brother, Dean, who hits the road with two thirds of the Order of the Triad to find him.