Unwilling to let Dawn jump or live on in a world without her sister and mother but seeing no other way to close the dimensional vortex Buffy jumps with Dawn and Spike just manages to grab hold of Buffy's ankle before she hits the portal and the three of them disappear. Dawn is written into the Young Justice universe as the fourteen year old daughter of Lana Lang and Clark Kent.

Story begins a few days prior to the events of NetFlix's the Defenders. Patricia Walker discovers a young girl, 15 to 17 years old, just outside her apartment who has suffered a severe neck injury. Accompanies her to the hospital. When she wakes up it is discovered she is suffering from amnesia.

Buffy wakes up aboard the Raza as a member of its crew. Just like everyone else she has no memories of her life before waking up.

When Buffy jumps to close the portal at the end of season five, Dawn vanishes with her. Whistler utilizes the trace elements of the Key that allowed Buffy to close the portal rewrites the history of the Danvers. They believe along with the rest of the universe, that Elizabeth Anne (Lizzie) is their biological daughter born January 19, 1993 and that Dawn is the biological daughter.