It’s the Valentine’s Day Ball and Marylou is determined to take home the crown as Queen of the Ball; her only problem is…she doesn’t have a date. With everyone already paired up for the dance her only remaining candidate is Pepe, who of course has ZERO interest in going. Cue G, as she tricks him into going for a cruise through the Tunnel of Love with Marylou. Now Pepe’s filled with amorous feelings toward Marylou…And he can’t stand it! His only solution: Find the source of his ‘love hex’ and destroy it.

Marilu quer passar o Dia dos Namorados com Mário, mas Pepe derrete o rosto dele com um projeto de ciências. Assim, Marilu insiste a Pepe a ir ao baile com ela, mas ele reluta em aceitar. Vó, cansada de ouvir a voz de Marilu, manda os dois para o Túnel do Amor, onde Cupido acertará Pepe com uma flecha e o tornará apaixonado por Marilu. Pepe, então, decide acabar com Cupido para não sentir nada por Marilu.