This summary is not the rule. The rule text controls.
When someone is arrested and charged with a serious crime, a judge must hold a hearing within a short time to review the case. At this hearing, the judge looks at whether there is enough evidence to move forward with the charges. The accused person has the right to be present and to have a lawyer.
If the person cannot afford a lawyer, the court will appoint one for free. The hearing cannot be skipped or delayed without a good reason. Both sides, the prosecution and the defense, get a chance to present their case at this stage.
This early hearing is meant to protect people from being held on charges that have no real basis. It acts as a first check to make sure the government has enough evidence before the case moves forward to a grand jury or trial.