In 2001, a joint US-Soviet expedition led by Dave Bowman landed on Jupiter to find out if there are any powerful creatures on Jupiter, because a mysterious black boulder recently discovered near Jupiter made US congressmen uneasy. But the expedition never returned, leaving only Dave Bowman's final exclamation: God, this is full of stars. Now, in 2010, Dr. Heywood Floyd (Roy Scheider), who was in charge of the expedition ten years ago, will go to Mars again. His and all the team members' mission is to find and repair the HAL-9000 computer used by the expedition that year to find out what happened ten years ago.