When you awaken tomorrow morning, you find yourself transported to another world, as an adorable brunette with magic powers. Seeing that it's a fantasy world, you realise what's going on, and decide not to try to save the world (and die trying). Instead, you take the chance to do something you've wanted to do for a long time, applying to become a cute young woman's meido.
She turns out to be a princess in disguise, and impressed by your personality (and smitten by your appearance), hires you on the spot (on the condition that you remain in uniform at all times, even on your time off); she also allows you to break the contract verbally at any time, just in case. Despite being a servant, and thus supposed to remain silent, she constantly converses with you, as the two of you get to know each other.
Eventually, she lets slip that she loves you... and before you can do anything, "eek!"s and knocks you out. When you come to, you're tightly bound, gagged, and leashed like a pet. She explains that she'd never meant to say it, and was afraid you'd run, so she made sure you wouldn't. Not seeing any fear in your eyes, merely a little concern, she asks if you'll stay with her, and you agree. ...It's only after this that she tells you the ropes, gag, and leash are now part of your uniform, and (as stated) will remain at all times.
News gradually spreads throughout the world of the pristine princess and her bound, magical maid, along with rumours that the bound between them is more than mere master & servant. And sure enough, the rumours are true; the princess secretly keeps you as her one true love, pampering you, making sure your work and bonds are always enjoyable, and even taking you out on a few adventures, as the pervy party's quirky mage.
And now, your curse: You are FULLY aware that your new life is the best isekai plot of the entire season by FAR... and yet, that no one in our world will ever see it. It's the plot you've always dreamed of, but...