Hercules is in a fight and Autolycus saves him by stopping time using the Chronos Stone which he stole from the museum in King Qualius' palace. Then when Autolycus is playing with it they accidentally travel back in time five years. The stone is broken and they have to steal it in the past. Hercules sees Serena in the past, on the day when Zeus slaughtered the golden hinds. Ares had just saved her and Hercules tries to convince him to leave her alone and turn her mortal so that she will have never died.
Episode number: 3x19 Airdate: Saturday May 03rd, 1997