It is K.O.'s 6-11th birthday and he makes his birthday wish to spend a whole day with Rad and Enid. The trio head out to the Plaza only to find that it is deserted. They decide to take advantage of the situation, but they suddenly begin losing their grip on reality when they think that someone is watching them.
In this crazy Halloween episode, K.O. visits Enid just in time to see her childhood friends from Ghoul School arrive for a visit. The gang is excited to have their "witch" back, but Enid is afraid of telling them about her status as a ninja despite K.O. reminding her that she "had this arc already".
The Bodega is unexpectedly visited by Sonic the Hedgehog and Miles "Tails" Prower, who aid K.O. in rescuing his friends from Lord Boxman. As Sonic tries to help K.O. with new techniques, Tails feels left out especially when Sonic starts calling him his "little buddy". When K.O. gets roboticized, Sonic must return him to normal.