However, the Second Foundation springs its trap in a manner which proves a complete surprise to both Channis and the Mule: The Second Foundation has altered Channis' mind so that he honestly believes that Rossem is the Second Foundation, while the rest of the Second Foundation have left their real home world for Kalgan, where they will start an insurrection against the Mule. When the First Speaker of the Second Foundation informs the Mule of this, the Mule is shocked, and lets his defenses down momentarily. The First Speaker takes advantage of this, and mentally alters the Mule so that he no longer seeks to expand his empire. The Mule returns to Kalgan, taking Pritcher with him and leaving Channis with the First Speaker.