"The SCP Foundation - EXPLAINED" video introduces the SCP Foundation, an organization that secures, contains, and protects anomalous objects, entities, and phenomena, ranging from benign to apocalyptic, to prevent chaos and maintain normalcy. The Foundation works in secret above international law, has the power to commit crimes and take lives if necessary to prevent existential threats posed by SCPs. SCPs are classified into three primary object classes - Euclid, Keter, and Thaumiel, where Euclid SCPs are entities that are difficult to contain and Keter SCPs are exceedingly challenging to contain. The Thaumiel SCPs are used by the Foundation to contain other SCPs. The Foundation personnel range from Class A to Class E, and the responsibilities are divided among the O5 Council Members, Site Directors, Researchers, Containment Specialists, Security and Tactical Response Officers, and Field Operatives. The SCP-2521, a creature that consumes anyone who speaks about it, is briefly mentioned, as well as the Foundation's ultimate goal of preserving peace by suppressing anomalies, even if it means terminating individuals.