Mike was an ordinary young accountant with a boring, forgettable life until one day everything changed forever. He was sitting minding his own business on the public bus home after a long day at work when a young woman with a pair of the biggest boobs he'd ever seen took a seat next to him. Perky and round like ripe cantaloupes, he couldn't help but sneak a glance down at them, watching them bounce and jiggle with each bump in the road. He could even see the outline of her silky pink bra as they strained against the fabric of her shirt. Feeling his cock harden painfully in his tight jeans as her perfect breasts turned him on like crazy, he tried staring down at his phone to avoid looking like a perv, but soon that would be the least of his concerns.

Passing through a shady tunnel that plunged the bus into darkness for a second, Mike suddenly felt a strange bout of nausea when they emerged until he looked down and was met with the sight of two massive, hefty melons poking out from his chest and long hair in his face! Eyes darting around his surroundings, he noticed that at some point he had swapped seats with the girl... and then looking at his reflection the window, he saw her face mirror his shocked expression! Somehow, he was the girl now! Her first thought was to scream, but a hand covered her mouth before she could get it out. Looking to the side, she saw that her old body was now shushing her, whispering "Hey, quiet... you don't want to get us in trouble. I swapped our bodies."

"How did you-" Mike (now Mik) muttered, getting cut off as her former body reached forward and tore open the front of her shirt, buttons flying onto the floor as her plump, pale boobs in their too-tight bra were almost totally exposed. Reaching up instinctively to try and preserve her modesty in case anybody saw, she really felt like a helplessly weak young girl as her partner grabbed that dainty hand and forced it towards his crotch, making her caress the bulging outline of her old, rock-hard dick through his pants. The feeling of touching a dick that was no longer his own felt gross and disgusting, but it was hard to ignore the fact that it was strangely alluring too. Trying to pull her hand away to stop this from going any further, she wrestled in his grasp for a few seconds before he finally picked her up by the waist and placed her in his lap, feeling his bare erection pressing between her buttcheeks even through her short skirt. "What are you d-doinggggggg!?" she cried as she felt the stranger hike up her skirt, tear off her thong and slide his cock into her tight little pussy, filling her up completely as a woman for the first time.

Closing her eyes and wincing in pain, Mik tried to call out for help but the hand was back over her mouth again, muffling the moaning as her every struggle meant more erotic grinding into her former cock. She could feel a wetness between her thighs as erotic instinct began to overwrite rational thought, the bouncing of her breasts with every thrust causing her to blush in embarrassment at just how good these incredible new feminine sensations felt. She could barely believe that she was currently a super busty young girl getting fucked in a public place with potential strangers watching, a totally submissive victim to this stranger's sexual whims, and yet the feeling of a big, rigid dick inside of her moist vagina was driving her more wild than anything she'd ever experienced as a guy. Eventually she found herself joining in with each movement, tongue out, eyes crossed, and bobbing up and down without a care for whoever was around, totally enraptured with the primal need to be treated like the good little slut she was.

She had already lost track of time and had probably already missed her stop when she felt her partner seize up, making one long, final stab as he filled his girl's fertile womb with a week's worth of pent-up semen, shooting shot after shot into Mik's uterus as she too experienced her first female orgasm. It was like a wave of pure pleasure had overcome her body as every muscle tensed and then relaxed, leaving her mind blank as she collapsed back into her chair. By the time she was finally able to gather her bearings, her old body had just jumped off the bus, leaving Mik looking very worse for wear: not only as a busty young woman, but sweaty, cum-filled and with her big breasts and cum-filled pussy lewdly exposed. She wanted desperately to get up and chase her assailant down, but her body was just too exhausted, her fate sealed forever as the bus doors closed and continued onward.