Not sure why, but on running the Plot Instance "Destroy One by One", I can do the first two fights (with or without skipping the lead-in), but when I try to do the 3rd fight (either the blue circle or the normal 3rd fight), the screen just goes black and I'm unable to click on anything. My only solution is to reload the page, which cancels the instance.
Anyone else having this problem? I've tried restarting my browser, restarting the page, etc.