Fairly closely, although there are some changes. In both versions, Helen Benson is a widow with a young son. However in the 1951 movie, Helen (Patricia Neal) works as a secretary for the Department of Commerce near where Professor Jacob Barnhardt (Sam Jaffe) works. Helen Benson in this movie is an astrobiologist who teaches at Princeton University and who studied under Nobel Prize winning Dr Karl Thomas Barnhardt (John Cleese). Helen's son in this version is actually her stepson and is called Jacob (Jaden Smith). Klaatu (Keanu Reeves) is known as "Klaatu" throughout the movie, instead of disguising himself as Mr Carpenter, as did Michael Rennie's character in the first movie. The robot Gort is also in the remake, although he is considerably taller and is now a more complex creation that is composed of a vast swarm of "nanomachines", microscopic insect-like devices that self-replicate through the consumption of matter (and possibly energy as the swarm of nanomachines grow in size when fired upon by rockets) and are capable of disintegrating any object or substance they touch. When the need arises, Gort can transform from a solid humanoid form to a huge cloud, which then swarms around targets and devours them. In addition to this mode of attack, Gort still possesses his trademark eye-beam to destroy obstacles, and to also manipulate attacking fighter drones by hacking into their electronic systems via projected beams. Klaatu's spaceship is considerably different in this version. In the original, the spaceship was a straight-forward flying saucer type craft that lands in President's Park in Washington, DC. In this version, the spaceship is a sphere composed of swirling biological matter and it lands in Central Park in New York. Other than these changes and a lot more action, the plot is still very similar. Klaatu and Gort land in Central Park, Klaatu is wounded and taken to a hospital, but he manages to escape and take shelter under the wing of Helen Benson. Klaatu is refused permission to address the United Nations by the US Secretary of Defense, so Helen takes him to see Professor Barnhardt. Many of the classic scenes are still there, e.g., Klaatu changing the equation on Professor Barnhardt's blackboard, the loss of energy around the world, visiting the grave of the boy's father, etc. Only the purpose for Klaatu's mission and the ending have been radically changed.