The idiom "pie in the sky" means a plan or idea that is impractical, unrealistic, or impossible to achieve. It often refers to something that someone proposes as a solution to a problem but lacks any actual practicality or feasibility.

"Over and above" is an idiomatic expression that means "in addition to" or "more than". It can be used to describe actions or qualities that go beyond what is expected or necessary.

The idiom "at stake" means that there is a risk or danger involved, especially in a situation where the outcome is uncertain. It can also imply a sense of importance or urgency, as if something significant is at risk of being lost or damaged.

"On doorstep" means someone is very close to you, ready to help or support you. It can also mean that something is just about to happen or that you are about to reach your destination.

The idiom "go down in flames" means to fail or end up in a complete disaster. It's a figurative expression that refers to the sudden and total destruction of something, usually a person or an organization.