lose the plot
US /luːz ðə plɑt/
UK /luːz ðə plɑt/

1.
失去理智, 发疯, 失去控制
to become unable to understand what is happening or to control your emotions
:
•
After working for 18 hours straight, I started to lose the plot.
连续工作18小时后,我开始失去理智。
•
The director seems to have lost the plot with this new movie.
这位导演似乎在这部新电影中失去了方向。