Captain Kirk and his crew must deal with Mr. Spock's long-lost half-brother who hijacks the Enterprise for an obsessive search for God at the center of the galaxy.
The Enterprise is diverted to the Romulan homeworld Romulus, supposedly because they want to negotiate a peace treaty. Captain Picard and his crew discover a serious threat to the Federation once Praetor Shinzon plans to attack Earth.
When an alien spacecraft of enormous power is spotted approaching Earth, Admiral James T. Kirk resumes command of the overhauled USS Enterprise in order to intercept it.
To save Earth from an alien probe, Admiral James T. Kirk and his fugitive crew go back in time to San Francisco in 1986 to retrieve the only beings who can communicate with it: humpback whales.
With the help of long presumed dead Captain Kirk, Captain Picard must stop a deranged scientist willing to murder on a planetary scale in order to enter a space matrix.