A few minutes later Stark and Banner exited the elevator and were greeted by Pepper.

"Tony, I'm so glad you're home sweetie.  You have a meeting scheduled this morning with the board of directors."

"Pepper, I just got back. I don't care who wants to meet with me. I just want to relax and then spend a little bit of private time with you."

"Tony, you have to meet with the board.  As soon as you're done, come back and get me.  You can take me for lunch, and then I'll give you a special dessert."

Stark agreed and left for the board room.  Banner started to leave the room to go to the Research and Development floors to continue his work when Pepper cut him off.

"Where are you going off to in such a hurry Bruce?"

"I have some work to do Miss Potts."

"Are you sure you wouldn't like to relax a little bit first.  I know that you don't really do well with stress."

Pepper slid behind Banner and started to rub his shoulders.  She leaned her head right next to his and whispered in his ear.

"You might even get to have a little bit of fun"

Banner pulled away, "What has gotten into you?  Tony is my friend.  I'm not going to do this to him"

"It's not about you doing anything to Tony, this is going to be more about what i'm going to do to you."

Pepper stepped toward Banner and leaned her face toward his.  She stopped when her lips were nearly touching his, and whispered again

"Tony is never going to find out."

Pepper dropped to her knees and quickly pulled his pants down around his ankles.  She looked at the clock and knew that she was going to have to prolong this to make sure that Tony would walk in before they were finished.  She lightly ran the tips of her fingers along the length of Banner's shaft.  When he became fully erect, she backed away and walked over to Tony's desk.

"Bruce, now that I don't want you to get too excited, too quickly.  Sit down, I'm going to put on a little show for you."

She reached over to the computer and turned on some music.  She climbed up onto the desk and started to sway her hips in rhythm to the song.  She reached behind her head and untied her ponytail.  She then slowly slid out of the jacket from her jacket.  She sat down on the desk, facing Banner and spread her legs, exposing her panties underneath her knee-length skirt.  She climbed off of the desk and slowly crawled over to him.  She turned around and pressed her ass against his shins.  She slid her shapely bottom up his legs until she was sitting on his lap.  She gyrated her hips and ground her crotch against his, feeling his erect penis rubbing against her soaking twat through her skirt and panties.  She reached behind her and grabbed his hands and placed them on her breasts.

Pepper leaned her head back and softly moaned in Banner's ear as he molested her.  She began to unbutton her blouse.  When she finished with the last button, she stood up and turned around to show him her bra clad tits.  She slid her blouse off of her shoulders and unzipped her skirt.  She continued to sway her hips to the music as the skirt slowly slid down her hips.  Finally, it fell to the ground, leaving Pepper standing there in only her bra, panties, heels and stockings.  She looked over to the clock and realized that she had lost track of time and that Tony would be back soon.

She straddled Banner's lap and once again started to grind her crotch against his stiff member.  She reached behind her back and unclasped her bra, exposing her modest tits.  She leaned forward until Banner's face was between her tits and started to shake her shoulders, smacking her breasts against the sides of his face.  She once again slid down onto her knees in front of him.  This time, she quickly took him into her mouth and started to bob her head up and down on his dick.  She reached down and pulled off her panties and started to finger her soaking hole, moaning around Banner's cock.

She looked back to the clock and saw that Tony's meeting was over and he would be back to his office in minutes.  She took her mouth off of Banner's member and straddled him again.  She reached down and positioned the head of his dick at the entrance of her dripping slit.  When she felt him start to penetrate her, Pepper slammed her pussy down on Banner's stiff rod and started to ride him like a bronco.

After a few thrusts, Pepper screamed out as an orgasm ripped through her body.  Waves of pleasure washed through her causing her to continue to moan and scream as she rode Banner.  After a few more minutes, Banner grabbed her hips and drove her down onto his full length and held her in place.  Pepper could feel him spasm inside of her pussy and then fill her up with his hot, sticky seed.  The sensation of his cock spraying her womb caused her to climax one last time.  She collapsed into his arms in exhaustion.  Banner suddenly realized what had just happened.

"Pepper, you have to get up and we have to get dressed before Tony gets back."

"Tony's already back."

Both of them looked over to the elevator door and saw Tony Stark standing there with a furious expression on his face.  Pepper jumped up off of Banner's lap and grabbed for her clothes, quickly covered up and feigned embarrassment.

"Bruce, you're supposed to be my friend.  I brought you into my company.  We take care of you.  If it wasn't for me, you'd probably be sitting in some SHIELD facility getting experimented on.  You ungrateful son of a bitch."

Pepper reached for the keyboard of Tony's computer as he screamed at Banner.  She hit the button and started the timer that she had set for the automated security system.

For the next thirty seconds, she watched as Tony berated Bruce, and Bruce tried to apologize.  As Stark was screaming, suddenly Banner was bombarded by repulsor blasts.  He quickly lost consciousness and fell to the ground.  Tony leaned down to check on him when Banner started to stir.  His body began to swell and grow, his skin started to turn green.  Stark moved to get away before The Hulk completely took over.  Before he could get away, a huge, green hand wrapped around Tony's throat.

"HULK SMASH!!!"

Stark's security system started to assault The Hulk with another round of repulsor beams.  This barely phased the jade giant as he continued to squeeze the life out of Stark's body.  Tony had just enough wherewithal left to signal Jarvis to deploy his Ironman armor.  A flash of red and gold knocked The Hulk away from Stark for a moment.  When he recovered, Hulk saw the Ironman armor enveloping Tony's body.  Stark fired a unibeam right into Banner's chest.

Pepper ducked for cover and watched the two founding Avengers battle in the office.  Ironman flew into Hulk and sent the green monster flying through the window and crashing down to the streets below.  Stark then fired a barrage of missiles into The Hulk before flying down to the ground.  He was about to inject him with a powerful tranquilizer when Hulk sprang back to life and began to pummel the armored Avenger.

Pepper Potts was standing at the shattered window watching the entire scene unfold.  A hundred feet below, her lover was being beaten to death by The Hulk.  She knew that by now, someone had called the situation into the police, and SHIELD had been alerted.  Soon enough, her master's plan would come to fruition.  Tony Stark would be dead, and Thor would be called in to save New York.

Down on the ground, Stark could faintly hear the voice of his AI system, Jarvis

"Sir, you need to get away.  Your vitals are fading, your armor is compromised, you are going to die if he hits you............."

Jarvis's voice faded away as The Hulk tore Stark's helmet off.  He saw the battered and bloody face of his teammate and friend and something clicked inside of his mind.  He was a hero, he needed to regain control and save Ironman.

Hulk picked up Stark and was about to leap in the direction of the nearest hospital when a bolt of lightning struck.  The rage once again clouded Banner's mind and allowed the beast to take over.  He looked toward the source of the lightning and saw Thor touch down.

"Banner, I do not know what has gotten into you, but know this.  I am going to stop you."

"HULK SMASH!!!"

As the two titans collided, the ground shook, glass shattered, buildings started to collapse.  Pepper looked on knowing that soon enough, her master would use Jane Foster against Thor, and that Bruce Banner would spend the rest of his life locked in a SHIELD prison.