SMG4's plot revolves around chaotic, meme-filled adventures in the Mushroom Kingdom, primarily featuring Mario and the creator SMG4, evolving from random skits to overarching story arcs like the Waluigi Arc, Anime Arc, and Lawsuit Arc, tackling major threats such as Waluigi's T-Pose takeover or Nintendo lawsuits, and delving into deep lore with the Revelations Arc involving the origin of Meme Guardians and the God Box, culminating in a universe-ending finale and channel's retirement.
