So, Selina is out in Gotham, doing Catwoman stuff, you know... stuff. All is going well until she soon finds a plush kitten floating by a balloon. She soon realizes that it once belonged to her old friend/fence, Lola. She soon sees a figure in the shadows, and gives chase over the rooftops, eventually finding more possessions of Lola's, taunting her in a way. Eventually, everything leads to a dead end, and Selina must go in for the night.
The next morning in Selina's newly rented out suite, her new fence Gwen informs her of a new job they've got, and she's to meet the client at a chess club. Later that night, the client tells her of a giant chess game being played across the city... yeah... and she's to take one of the pieces, to knock out the other.
She does this all, and it turns out the chess pieces have people in it, and one blows up as Selina saves the other... yeah...