Gwen climbs onto the roof of the auction house, breaks into the alarm-system wiring, and works her electro-magic on the wires, shutting off the security cameras. Her superpowers also open the door, and she enters the building. As she does so, we pan over to Angel, Gunn, and Fred, who are clambering more noisily onto the roof. Oh boy, it's a caper! Gunn pants, "This is so much harder than it looks on Batman." Angel rips the door off of the alarm box, fiddles ignorantly with the wires for a moment, and finally yanks them all out. The lights go out in an underground garage. Heh. Fred uses a gizmo to open the door. I approve of occasionally making the MoG look dopey. Although you don't really need a super-powered anti-heroine to do that.
Cut to a hallway, where Fred is pointing at the building's blueprints and telling the guys their jobs. Shouldn't they have studied the blueprints a little bit before starting out? Oh, right: they're dopey. The plan is that Fred will disable the security while Gunn knocks out the guards and Angel grabs the Axis. Angel and Gunn move out in opposite directions. Fred wearily calls, "Guys!" They reappear, because it seems they were both going the wrong way.
The cameras come on again, and we get a rather-too-artsy shot of Gwen's eyeball before we see that she's tapped into the cameras somehow and is aware of the other intruders.
Fred enters a room full of blinking lights meant to imitate computer banks and moans, "Please, let my cellmate be gentle." Shouldn't they all be singing a catchy song during all this? Sorry, I watched Hudson Hawk over the summer, and it's colored my ideas about heists.
In the building's lobby, Gunn sneaks up behind a guard and calls, "Look out!" The guard spins, and Gunn knocks him out. "I tried to warn ya," he says, and drags the guard's body out of sight.
Angel strides up to the vault room and stands just outside the door. He sprays what I assume is canned smoke around so that we can all see the pretty lasers crossing the room. "Help me out here, Fred," he mutters, and a gate suddenly slams down, blocking the doorway. Angel is attempting to lift the bars up when he's thrown back by something sparking. A grate in the vault's ceiling opens up, and Gwen drops down head-first. She hangs in mid-air and quips, "Y'know, I put that down for a reason."