Phil finally finds the perfect reason why he 'must' have adulterous sex with attractive Melissa too to repopulate the planet: otherwise his legal offspring be condemned to incest only. Rather then admit this fact, Carl scolds him a sex-craved swine and Melissa 'stands by her friend', who forgives her soon, while Phil seeks to 'atone' by presenting himself in a dunk boot. Ultimately everyone agrees on sex rules, but meanwhile a fourth survivor, fatso Todd, approaches Tucson.
—KGF Vissers