Cartman finds a stupid triangle while the boys are excavating arrowheads and it turns out to be magic.

Barbra Streisand arrives and threatens Kyle for the magic triangle.

Robert Smith destroys Mecha-Streisand.

Cartman swears he'll get the triangle back from Kyle.

The boys are in grave danger if Streisand can get to them before Maltin and Chef.

Kyle catches Cartman trying to steal the triangle and lets him have it.

Leonard reveals Barbra's motives for the triangle.

Barbra shows up in disguise and bribes the boys with cash to get them to give her the triangle.

Barbra tortures the boys with her singing until they give up the location of the triangle.

Babs retrieves the other half of the triangle and turns into Mecha-Streisand.