In Shi'a Islam, Qayāmat means "The Day of Judgment" and denotes that God will raise mankind for Judgment. It is one of the Shi'a Roots of Religion (Usūl al-Dīn).
All dead from throughout history will be brought forth to life again, and judged for either hell, or heaven. Prior to this, the Mahdi, along with Jesus, will return to the world in order to restore justice.