Susan Shawson (Elisha Cuthbert), a 13-year old high-school, inadvertently travels back in time in her apartment building's elevator. As altered by Dr. Reynolds (Michael Sinelnikoff), a retired physicist living upstairs, this secret time machine transports Susan from Philadelphia of 1998 back to the exact same spot in 1881. There she meets Victoria Walker (Gabrielle Boni), a girl her age in need of assistance with her own family problems, most notably a schemer named Cyrus Sweeney (Jean LeClerc) trying to take advantage of her widowed mother Nora (Lynne Adams).
