Megan was taking her dog Max out for a nighttime walk when the wave of energy hit. The two soon found themselves being pulled together, the rottweiler yelping in shock when their bodies collided. Megan's legs fused with Max's shoulders as the dog's body grew to the size of a horse. Megan's upper torso was now connected where the Max's head used to be, the black and brown fur transitioning to her tan skin.
Three new pairs of breasts grew down her torso, and the nipples on Max's canine lower body ballooned into four more rows of furry breasts. Alongside the new breasts Megan felt a sensation from her lower body that reminded her that Max was male. Max's canine cock extended out of its sheath to a massive two feet long, with his balls growing to the size of cantaloupes. Behind the massive ballsack a slit appeared, a new vagina to replace the one Megan lost in the fusion. Finally, Megan's head shifted to one side as another head grew beside hers. The new head had a face she didn't recognize, it was feminine and had the same skin tone as her, but the other facial features were different. The strangest part was that the new head had a pair of dog ears on the top of it's head and no ears in the normal place.
As Megan came to terms with her transformation, which took place in just a few seconds, her other head, which belonged to Max, quickly decided on a course of action. Max had full control of their lower body and made use of it by running off in search of a mate to sate his throbbing erection. Megan, who controlled only the upper body, had no say in their destination.
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At the same time a woman named Mia was in her backyard, relaxing in a lawn chair as she listened to the songs of nocturnal birds while drinking some iced tea from a glass set on a nearby table. When the wave passed over her, the shock caused her to fall out of her lawn chair as her changes began. Her pants were torn to shreds as her feet became scaly bird talons from the thigh down and her arms transformed into bright pink feathered wings. A feathery plume grew between her breasts, themselves growing larger and firmer, becoming the size of beach balls, ruining her shirt and bra. Her lips plumped up and her hair grew down to her thighs before both turned the same shade of pink as her feathers. A wave of arousal filled Mia's body from head to toe, causing her pussy to become soaking wet and her nipples to stiffen.
As Mia attempted to get up with her wing-arms and bimbo tits, several figures entered her vision. Half a dozen other harpies now surrounded her, their bodies all sexualized in various ways. One with green and black patterned feathers had a pair of ten inch cocks with two pairs of balls, another similarly feathered one had three F-cup breasts with inch-long nipples that dripped milk constantly. There was a trio with yellow breast feathers and light brown wings, the first had three heads and four wing-arms, the second had foot long horse cocks instead of nipples on her breasts, and the thirds head wasn't on her shoulders, but on the tip of her foot long cock. The final harpy had brown and white speckled feathers as well as four legs all beside each other, the outer two crotches had foot-long cocks with apple-sized balls and the centre crotch had a vagina.
Mia stared at the six other harpies, their erect cocks and drooling pussies making their intentions clear. The four legged harpy lifted Mia up and placed her on top of the table, spilling her glass of tea. The harpy then thrust her left crotches cock into Mia's pussy as the cock headed harpy began kissing Mia from the other end, the taste of pre-cum filling Mia's mouth. The twin cocked harpy straddled Mia's stomach and used began fucking her tits with both cocks at once. Meanwhile the harpy with dick-nipples had lain down on the lawn chair backwards, her head and back supported by the flat leg rest, as the three headed harpy and the harpy with the four breasts rode her dicks, the three headed harpy drinking from the others breasts.
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Dave had just gotten back from his job in town and was walking from his car to the door when the wave hit him. He suddenly found himself unable to move, his feet having torn through his shoes and rooted themselves into the ground. Dave found himself being pulled further into the ground as his feet and ankles transformed into a complex system of roots. His shins fused into a short, green stem and a circle of thin, white petals grew out just below his knees, each one longer than he was tall. A pale, green colouration spread up his body as all of his body and facial hair vanished. His body feminized and his nipples puffed up into a pair of A-cup breasts. In contrast to his now feminine body however, his cock and balls started to grow larger, stopping at a mind boggling seven feet long and a foot and a half thick, with a sack the size of an exercise ball. His hair then took on a darker shade of green than his skin as it lengthened and sprouted dozens of leaves.
Dave, now an Alarune with a cock and balls larger than the rest of his entire body, was stunned into complete silence. He was suddenly shaken out of his stupor however when Megan and Max came bounding from down the street. Max wasted no time in mounting Dave's massive penis and shoving his and Megan's own canine cock into the alarune's urethra. Soon Megan, caught up in the lustful stupor caused by her horny former dog, leaned the upper body she had control of forward and pulled her sudden lover into a passionate kiss. Dave, caught up in the weirdest but also best sex of his life, eagerly kissed Megan back as he began to fondle her eight upper breasts. It wasn't long before the horny dog-taurs shot their load into Dave's cock, the semen making it all the way to the alarune's bloated ball-sack. Dave came a few moments before his conjoined lovers but no cum came out of his cock, nor would any come out during any of the many orgasms he would experience tonight as, unbeknownst to him his ball-sack actually contained a dozen wombs that were now all pregnant with Megan and Max's puppies.