有人可能会说18岁的芭比有点太老了，不适合找保姆，但她的继父母坚持要玛丽照顾她——而玛丽对乐趣有自己的想法。一开始只是单纯的照看孩子，很快变成了一场激烈的捆绑游戏，玛丽完全掌控了芭比，让她经历了迄今为止最艰难的挑战。

受到日式绳缚的启发，玛丽用大量的绳子将芭比绑成严格而复杂的图案。场景一开始，芭比正在玩娃娃，完全没有意识到接下来会发生什么。很快，玛丽走了进来，将芭比的手腕绑在身后，用黑色口球让她无法说话，然后开始用绳子缠住她的胳膊和身体，用力拉紧她的肘部，把她锁在紧绷的绳索中。

芭比被绳子缠住后，玛丽脱下芭比的白袜子，塞进嘴里，重新戴上口球。为了将绳子固定在芭比的嘴唇之间，她用绳子多次绑住她的嘴唇，形成了一个塞满口子的口塞（为口塞爱好者提供特写镜头）。

芭比现在赤脚被绑住，嘴被紧紧堵住，躺在地板上挣扎，而穿着高跟鞋的玛丽则在一旁看着，嘲笑和戏弄她无助的继妹。镜头从下方捕捉到芭比拼命挣扎的画面，聚焦于她被紧紧捆绑的样子和玛丽高耸的鞋跟。

作为最后的羞辱，玛丽将芭比的手腕和脚踝紧紧地绑在一起，确保她动弹不得。然后，她把芭比拖进一个玩具屋，把她锁在里面，让她挣扎、堵住嘴，孤身一人、完全无助地挣扎，直到视频结束。Some might say 18-year-old Barby is a little too old for a babysitter, but her step-parents insisted on Mary watching over her—and Mary has her own idea of fun. What starts as innocent babysitting quickly turns into an intense bondage game where Mary takes full control and puts Barby through her tightest challenge yet.

Inspired by shibari-style rope bondage, Mary uses an incredible amount of rope to tie Barby up in strict, intricate patterns. The scene begins with Barby playing with dolls, completely unaware of what’s coming. Soon, Mary steps in and binds Barby’s wrists behind her back, silences her with a black ball gag, and begins to layer rope around her arms and body, pulling her elbows close and locking her in a tight rope harness.

Once Barby is wrapped up in rope, Mary removes Barby’s white socks and stuffs them deep inside her mouth, replacing the ball gag. To keep them in place, she ties rope between Barby’s lips multiple times, creating a severe mouth-packing gag (shown in close-up shots for gag fans).

With Barby now barefoot, tied, and tightly gagged, she’s laid on the floor and left to struggle as Mary watches in her high-heeled stilettos, mocking and teasing her helpless step-sister. The camera captures Barby’s desperate struggling from below, focusing on both her tight bondage and Mary’s towering heels.

As a final humiliation, Mary hogties Barby’s wrists to her ankles with no slack, making sure she can't move. Then, she drags Barby into a toy playhouse, locks her inside, and leaves her struggling and gagged, alone and completely helpless until the end of the video.