The Guy Club guys come back through a portal in Gretta's fridge with some new members from the cosmos, but the fate of the world hangs on sending one of the new guys back home. Gretta and Baldric attend a parent teacher conference that confuses Gretta's history teacher.

Gretta is confronted by Militsa, a princess of the Severians who has set out to free her tribe from the rule of the Rogemorians. Gretta refuses Militsa's request on the grounds of tradition. But after Militsa steals a Severian artifact from Gretta's house, Dwight, Gretta, and Baldric search for the Severians to get answers.

Gretta, Baldric, and Hexela help Dwight pick out a luck charm before he coaches a Woodside seniors' dodgeball game, but when Dwight blows the Viking whistle he picked out, he conjures the ghost of a cursed Viking berserker who is invisible and inaudible to everyone but Dwight.