Daughter of the scientist - Sam, is left alone in the world trying to survive with local farm and hope to restore the world. (Sam, go to psychiatrist).
Randomly talking with her friend via internet.
Other guy, trying to escape earth, landing where Sam lives (she has working radio station.)
Guy offering to fly away and Sam agrees.
Short scene where Sam have urge to sleep with guy. (No wonder - being alone for a year!)
Both prepare to fly away, but Sam decides to stay on earth in the last second.
Guy flies away.
End scene of Sam and her son with pseudointelligent text of saving earth and starting new life.