Ben Murillo has acquired some information on the whereabouts of the Soviets. He meets Indiana Jones and tries to convince him to go on another adventure to try to stop the Soviets from resurrecting one of the world's evilest leaders.
Ben meets Indy
Ben Murillo finds Indiana Jones to tell him that the Soviets are trying to resurrect Joseph Stalin. No one knows how he got this information. Indy declines the mission. But Ben and Mutt convince him into going on another adventure to try to stop the Soviet resurrection.
Trip to Soviet Union
Ben Murillo joins Mutt and Indy in their adventure to the Soviet Union. Although Ben is just there for the guidance, he won't be doing any fighting or action. Since Indiana, Mutt and Ben are American, they are not allowed anywhere close to the Soviet Union, especially after what happened in Indiana Jones and the Kingdom of the Crystal Skull. They decide to go a different route. The three decide to go into the Soviet Union through Finland and reach Leningrad, a.k.a. St. Petersburg that way.On the airplane ride to Finland, Ben describes a brief history about Joseph's resurrection and artifacts. He said "(The Soviets) are using the Roswell Alien's Crystal Skull to help resurrect Stalin". Indy was confused and surprised to find out that the Crystal Skull of Roswell Alien was stolen after he rescued it.
Once the three reach Leningrad, Indy and Mutt head their separate ways while Ben enjoys the Russian vacation.