It stars John Barrowman as Captain Jack Harkness, Eve Myles as Gwen Cooper, Gareth David-Lloyd as Ianto Jones, Tom Price as PC Andy Davidson, and Erin Richards as Freda.

At the Hub, Jack Harkness practices knife throwing while Gwen Cooper has troubles operating the Rift database.

Gwen proceeds to take blood tests while Jack and Ianto return to the Hub with the gun.

In the SUV, Jack toys with it and they realise the gun has the power to immobilise security systems and in particular, the traffic.

While Gwen attends to a burn on her arm, Freda recalls a house fire as well as a Cardiff address and the name of a woman.

Freda reveals she is half human, that Moira Evans was her grandmother, and begins to remember the house fire once before exclaiming that people like Gwen and Andy killed her mother.

In the car, Gwen and Jack discuss ways of subduing Freda, with use of grenades and stun guns.

Andy tells her he's sorry about her mother and that he feels alienated like she does some of the time and that makes them both equal, no matter their species.

Freda explains to Gwen that her grandmother's species sought refuge on Earth and that the memories of the fire are too much for her to remember.

Gwen offers to retcon her so she can start anew, but Freda denies it; stating she doesn't want to forget her mother entirely.

Gwen and Ianto come to the realisation that they need to take responsibility for the good things that come through the Rift, like Freda and prompt Jack to introduce an asylum policy.