A false move by either of those two would ruin my plans.

But no, they're not honest, and they probably would have ruined all my plans.

In any case, now if ever was my chance to ruin Victor's plans.

A police raid at such a time would ruin all my plans.

He had no idea why she'd suddenly become the center of attention, but it was ruining his plans.

Some did nothing that she could see, and yet ruined Its plans utterly.

Snow would ruin everything he'd worked for, all his careful plans.

Could competition beat them to opening and completely ruin their plans?

"It will ruin our plans, if they don't give the right reaction."

"I'm sorry I ruined your plans by falling for you."