Jason Segal, Jonah Hill and Jason Schwartzman are all appearing in a new picture together and, surprisingly, it has nothing to do with uber-comedy producer Judd Apatow.  Hill has appeared with both actors in the Apatow produced "Forgetting Sarah Marshall" and Apatow directed "Funny People" and, it appears, helped recruit them to star in the new comedy "The Adventurer's Handbook" which he co-wrote.

According to The Hollywood Reporter, the flick will focus on four childhood friends who, bored with their everyday lives, decide to go on a worldwide adventure after reading the stories detailed in Mick Conefrey's novel "The Adventurer's Handbook: Life Lessons From History's Great Explorers."  The film will be directed by Avika Schaffer ("Hot Rod") and was written by Hill, Matt Spicer and Max Winkler. 

While the fourth buddy is still not cast, Segel is on board as a talented, but alcoholic musician who can't get beyond being a backup piano player; Hill plays an engineer with family troubles; and Schwartzman is a spoiled three-time Grammy winner.

Hill recently wrapped production on "Get Me to the Greek."  Segel, who appears on the CBS sitcom "How I Met Your Mother," starred in the hit "I Love You, Man" this Spring.  Schwartzman own TV series, "Bored to Death," debuts this Fall on HBO.

Universal hopes to begin production on "Adventurer's" early next year.