The untimely death of his fiancee, Emma (Sienna Guillory), sends Columbia University professor Alexander Hartdegen (Guy Pearce) scuttling back to his drawing boards. Four years later, the scientist emerges from a self-imposed social coma long enough to test out his invention – a time machine that allows him to return to the night his life was irreversibly changed and his love was stolen away.
However, despite a valiant effort, Alexander is unable to save Emma from destiny