Its been 3 years passed since Oliver was born, from an bed oopsie that Joker and Harley made, and of course, Joker didnt wanted the responsibility of an child, so he dumbed her and they broke up.

But, instead of hating Oliver like Joker did, Harley loved him to bits, taking him with her, she crashed to an old building, far away from where Joker was, in an other side of the Gotham City.

Currently, Harley is sitting down on the rooftop of this old house, being old, it was still quite tall.

Oliver was on her lap, as she rubbed his hair, the boy was 3 years old now.