According to Richard Standhope's will, both his daughter Laura and her long-lost twin brother Larry must be reunited by a certain date, or the estate will revert to her avaricious guardian, Andrew Brean. Following Standhope's death, Laura and her sweetheart, Jim Watson, read in her deceased mother's diary that Andrew had broken up the Standhopes' marriage soon after the twins' birth by unjustly accusing Mrs. Standhope of infidelity. Laura was then sent to boarding school, while little Larry, placed in his father's care, was neglected and later became a thief. As Laura and Jim ponder Larry's whereabouts, the house is robbed by none other than Larry, now called "the Kid," and his cohort, "the Snail."
