As I'm sure you found when he discovered your plan.

What if Michael had somehow got out and discovered their plans?

Therefore we have to discover his plans and act accordingly.

I discovered his plans and tried to stop him.

As they did not come into sight again, Jean concluded he had discovered their plan.

Scheme so as to discover his plans and the likelihood of their success.

Gregor discovered her plans so she arranged to have him killed.

This may be how the authorities discovered his plans.

Rose discovers their plan, and she and Christian run out to stop them.

Just before they manage to leave, Xiangyi discovers her plan.