John Adams left 17 commissions for Madison and Jefferson to deliver. But they refused to deliver them.
Nope, we aren't delivering them Mr. Adams
I'm William Marbury and I will deliver the commissions since these two fools can not and become the Secretary of State by doing so.
I John Marshall am in a dilemma. If I declare Jefferson wrong, then he will be after me and most remove me from my duty, but if I choose Jefferson and Madison to be innocent then I would be biased since they didn't deliver the commissions like they were asked to.
After a long thought process I have decide to consider that Madison and Jefferson were wrong to not deliver the commissions.
But the judiciary act of 1789 that gave the Supreme Court to issue the writs clarified that punishing Madison and Jefferson was unconstitutional, and created a situation where the Court would be flouted or disregard openly.
This eventually led to judicial review which was that no act or law could contradict or go against the U.S constitution.