Jon tumbled back onto his bed from the sudden weight he felt on his arms that caused him to lose his balance. It was quite fortunate for what had appeared in his grasp that he hadn't fallen to the floor instead. Whatever it was, two things struck Jon before he opened his eyes: it was wet and there was a fishy smell in the room now. After he landed on the bed, he hesitantly opened his eyes as if he had somehow expected the fall to last longer than it had.
In his arms was exactly what he had wished, though perhaps not exactly what he had been expecting. A mermaid. A mermaid that looked a bit like a certain mermaid from a certain movie, at least in respect to her hair and scale colours.
Her hair was red, though a more natural red and not a cartoonish shade, and reached down to her athletic waist. Her eyes were an ordinary blue, but the rest of her was far from ordinary, unless one had the habit of holding and carrying such creatures of the sea. Her ears stuck out from under her hair and appeared to be emerald green, pointed, and fin-like. Her full lips were a 'bright-but-not-too-bright' pink and had a puffed up appearance, not unlike those of a few actresses. Her breasts, presently hidden by her hair, were a good size: big enough to get attention from those who had wandering eyes and yet not too big that they would cause too many problems with her swimming with her strong tail. Jon's guess was perhaps a bit bigger than DD cups. Her skin and scales had a glossy appearance from the water clinging to her body. Jon figured that he must have wished her right out of the ocean instead of from some beach.
Her aforementioned tail was covered in emerald green scales that all were about the size of her thumbnail. He could feel on her back that she had a fish-like dorsal fin on her lower back close to where skin met scale - or more appropriately where skin melded into scales as there was no clear cut-off point between the two, just that it was below her navel. She had fins on the side of her arms as well, with similar scales surrounding them, that ran from her wrist to her elbow - one per arm. Her dainty fingers were webbed with a green transparent webbing. On top of where her thighs would have been were another pair of fins, matching the pair of fins on either side of where her shins would have been. Finally, at the end of her tail was a caudal fin that was roughly two feet long and three feet wide, which seemed to be flopping away on top of his bed as she laid there in his arms.
She didn't lie there for long, though.
"Where am I?," she asked as she looked around the room from where she sat. Jon was too amazed at having a mermaid in his lap to be surprised that she could speak English, or frankly any human language.
It was quite an alien environment to be in for a mermaid. Not only was she on land, she was further inland than she had ever been before, not that she knew that yet. Not only was she a distance inland, she was in a house, a human dwelling. Not only that, she was in a male human's bedroom. She was merely uneasy while she scanned the room in search for where the ocean had gone, but when she caught sight of Jon, the human sitting beneath her, she panicked. She used her arms to help turn herself over and in turn she fell out of Jon's arms, off of his bed, and onto the floor. Her tail hit the floor with the sound of both a splat and a thud. Her arms stopped her upper body from the same fate. After she was on the floor, her caudal fin flopped about and then seemed like she was trying to use it to push against the floor while she dragged herself forward with her webbed hands.
Still in a state of shock, Jon managed to look down at the struggling mermaid. This was why he had chosen a mermaid instead of some other being to summon. He remembered from stories that mermaids could be deadly in their native element, whether it was the ocean or a lake. On land, however, they were reduced from fearsome creatures to helpless beings. Though, perhaps not totally helpless from the look of that tail that had to have gained some strength from swimming through the distances of the ocean and against the currents. Her backside, by the way, since Jon could now see it, was more of a single scaly mound. That and her wiggling her wide scaly hips to see if it would help her move across the floor any easier was not helping a certain feeling he was having for her.
He finally stood up and walked over to her, being careful to try to stay out of the range of her tail (which was hard to gauge since she didn't have a knee and thus her tail was more flexible than a pair of legs). He knelt down in front of her and tried to calm her down.
"It's going to be all right. I'm not going to hurt you," he began as if his dialogue had been taken from an old B-movie. He knew that alone wasn't going to stop her from panicking completely.
"No, it's not going to be all right!," the mermaid interrupted. "We're forbidden to be seen by humans unless absolutely necessary," she said, perhaps referring to ocean rescues of humans. "Could you please tell me where I am and how did I get here?," she asked, calming down slightly while her caudal fin flopped about on the floor behind her.
Jon considered his options: he could tell the truth and see how she would react to knowing that he summoned/captured her, or he could lie and be sure that she wouldn't blame him, but that lie could come back to get him. Although, he could also mix both truth and lies, but that would also potentially lead to a tangled web situation.