When Rob King, who is courting Tabitha Beiler, must go away for a time to aid his ailing grandfather, he charges his best friend, John Miller, with the care and keeping of the beautiful girl of his heart. John, who has been Robs best friend since boyhood, accepts the responsibility with serious intent. But John discovers that it is his own traitorous heart that must be guarded as he finds himself falling hopelessly in love with his best friends girl.