Kirk (William Shatner), McCoy (DeForest Kelley), and Spock (Leonard Nimoy) are enjoying a vacation in Yosemite National Park when duty calls. Vulcan cult leader Sybok (Laurence Luckinbill) and his followers have invaded a "planet of peace," where delegates from hostile races co-exist in a sort of intergalactic United Nations. Ordered to quell the crisis, the Enterprise crew discovers that it's a ruse perpetrated by Sybok, who takes over the ship, piloting it toward the "Great Barrier," an energy field at the galaxy's rim. Sybok, who is revealed to be Spock's half-brother, possesses the ability to help people face their "inner pain." He also believes that God lies beyond the Great Barrier. Once arriving there, however, Sybok and the Enterprise crew discover only an imprisoned alien entity.

1. The Mountain - 3:50
2. The Barrier - 2:53
3. Without Help - 4:18
4. A Busy Man - 4:37
5. Open the Gates - 2:57
6. An Angry God - 6:55
7. Let's Get Out of Here - 5:12
8. Free Minds - 3:15
9. Life Is a Dream - 3:56
10. The Moon's a Window to Heaven - 4:00 (Hiroshima)