Justice League/Teen Titans Chronicles: Masters of Hope

Justice League/Teen Titans Chronicles: Masters of Hope is a direct-to-video animated superhero film which tells various stories featuring members of the Blue Lantern Corps, including Superman, Mala, Solovar, Oreo and Arisia Rrab. The film is similar to Green Lantern: Emerald Knights and Kung Fu Panda: Secrets of the Furious Five.

Summary
Set between the Justice League: Knights of Rao episode "Justice Titans" and Alternate Season 2 of Teen Titans episode "Stone and Steel", Terra and Collin Hill end up encountering the Book of Odym, on which they learn more of the origins of the Blue Lantern Corps.