In “After Earth,” Jaden Smith stars as Kitai Raige, the failed cadet son of the zen-like general of the United Ranger Corps (Will Smith in a god-like role as Cypher Raige), the military arm of a human race transplanted onto a new world after destroying the Earth 1,000 years earlier. But the kid gets a chance to prove his mettle when the space ship he’s traveling on — with his dad — crash lands on, of all places, Earth, and he must travel 100km over rough land to retrieve a beacon to signal for help. The movie starts off with some weak narration to introduce the action, then segues into a contrived storyline with weak acting by the young Smith (the kid just can’t take command of a scene, though he plays scared really well). It’s goofy and ludicrous and a vanity project for kid Smith by pop Smith’s production company. The best part of the film is one of its extras: “The Nature of the Future” featurette that explores the beautiful landscapes in which the film was shot (Costa Rica, Utah and Northern California), set to lush music.Extras: “A Father’s Legacy” featurette with Will and Jaden Smith on- and off-screen; “1,000 Years in 300 Seconds” on-location featurette; “The Nature of the Future” featurette that explores the beautiful landscapes in which the film was shot (Costa Rica, Utah and Northern California), set to lush music. Blu-ray adds alternate opening sequence; “Building a World” featurette; “Pre-Visualizing the Future” featurette; “The Animatics of After Earth” featurette. Vitals: Director: M. Night Shyamalan. Stars: Jaden Smith, Will Smith, Isabelle Fuhrman, Zoe Kravitz, David Denman, Sophie Okonedo. 2013, CC, MPAA rating: PG-13, 100 min., Science Fiction, Box office gross: $60.047 million, Sony.