HLS Crewed Lunar Demo is the second of two missions contracted by NASA to SpaceX. It will be carried out by Starship HLS under the Artemis Program. HLS will be launched to low-earth orbit, where it will dock with and refuel from a Starship propellant depot. From there it will undock and perform a trans-lunar injection burn and enter NRHO (Near-rectilinear halo orbit). It will loiter until an Orion spacecraft crewed with four astronauts as part of the Artemis III mission arrive, at which point the two spacecraft will dock, two astronauts will transfer into Starship HLS, undock again and descend to the Lunar surface. The two astronauts will spend several days on the surface, after which HLS will lift off, rendezvous and dock with Orion once more, completing its mission.