Something had happened to upset their plans; so much was evident.

Why should there be anything to upset his plans?

I can think of one way to upset his plans, whatever they are.

We upset their plans, and that has needed doing for many generations.

I've upset her plans to sweep me off my feet.

It will upset all my personal plans severely if I'm murdered today.

I'll show you what happens to children who upset my plans.

But for the Townsends, two small changes were enough to upset his plans.

"Congress will not have a chance to upset my plans."

But when I refused to aid him, it upset his plans.