Art3mis winked at me, and then her legs melted together to form a mermaid’s tail. She flapped her new tail fin once and shot ahead of me, her body undulating and thrusting in time with the machine-gun beat as she swam through the air. Then she spun back around to face me, suspended and floating, smiling and holding out her hand, beckoning me to join her. Her hair floated in a halo around her head, like she was underwater.