Ben 10: Alien Force › Season 3

S3 E15: Time Heals

Despite being warned by Paradox, Gwen travels back in time to prevent the accident that turned Kevin into a monster from ever happening. Gwen returns to the present only to find that her time traveling caused a series of events that led to Hex ruling the world.

Air date	Jan 22, 2010
Runtime	23 minutes
TMDB rating	★ 7.8/10