Cast Away is divided into three clearly-defined acts: the setup, the main story, and the aftermath. Although the movie's centerpiece is the 75-minute portion detailing Chuck's experiences while marooned, it's the third act, which offers no easy solutions for difficult situations, that elevates the film from the level of a stirring, innovative adventure to an fully satisfying drama. This is the film Red Planet could have been if it had possessed the guts to challenge viewers rather than saddle them with a worn-out, regurgitated plot.