Leslie Ambriz.

Superman might do more than just save Metropolis. Filmmaker James Gunn hopes the beloved superhero will bring hope to a cynical world. “Superman,” which flies into theaters nationwide Thursday, is a bit of a change in tone for the writer and director who brought a mischievous playfulness and snark to the chaotic worlds of “Suicide Squad” and the “Guardians of the Galaxy.” The film is threaded with optimism and what it means to be inherently good as audiences watch the metahuman save the day. Gunn doesn’t just focus on Superman’s humanity but highlights the importance of truth and the power of journalism to fight against injustice.