It was Poison Ivy's womanly trap

Poison Ivy had decided to trick them all into coming to this warehouse.

Betty was happy to help

Batman and all his hero pals were in the warehouse, searching around. Thay saw that one end of the warehouse had been turned into a green house with plants and green mist floating in the air. Thankfully he had on his mask.

The plants were alive and on the attack, but quick granades of BatAcid pellets were taking them out.

“Ivy show youself” Batman Said

A gigantic rose that stood 12 feet open up. It showed Ivy Laying on it petting a tied up Robin. Plants leaves were covering her tits.

“You've gone TOO FAR this time Ivy” He said

“Oh I don’t think I gone far enough” Ivy said

Suddenly from out of another flower popped Betty, she flashed her hypnotic tits at him

Betty appeared out of a plant. As it opened up its flower, she stood up from inside it, and flashed her hypnotic tits at Batman. The Riddler was lying asleep and captive at her feet.

Like everybody, Batman was immediately drawn to Betty's wonderful ample bosoms and the narrow cleavage between her upper breasts.

"These are magical breasts, Batman, look at them" he did - they all did
"and soon you will be ours, ours to do with as we please!"

Wishing he had never stared at her tits, his eyes became fixed - he tried to, but couldn't divert his gaze away from them. He was aware of the powers of Betty's hypnosis coming over him, and he was helpless to stop it. They were all in the clutches of these magical hynotic tits.

Poison Ivy laughed. As Poison Ivy laughed, Betty also began to laugh.
Poison Ivy laughed, Robin who's hypnotized face her naked butt was sitting on, in a flower, felt the pushing-down-on-him vibrations of her ass on his face.

Getting well excited, Poison Ivy started bouncing up and down on Robin's slavely face.

At the same time, Poison Ivy's Flower Power girls were tieing Batman and all his pals up.