Six-year-old Patty Branson, is almost abducted in Central Park while her father reads the paper. Benson and Stabler investigate to find out that the men who attacked her are actually P.I.'s, and have been hired by Michele Osborne to kidnap Patty, claiming she is Patty's real mother. M.E. Warner conducts a DNA test to prove the child's true biological mother. Meanwhile, Benson traces the source of the confusion about the child's origins back to a fertility doctor.