Gabby has to choose between keeping her new secret alien-babysitting gig a secret or risking it all by confiding in her extraterrestrial-obsessed best friend, Wesley.

When Gabby hears a rumor about herself going around at school, she uses a telepathic alien to find out who started it, jeopardizing the alien in the process.

When Jeremy accidentally sneezes on Gabby, his mucous causes Gabby to become an academic genius; now armed with super smarts, Gabby battles arch rival Susie in a math showdown.