Eruca Crawford, Allen's step-sister, suddenly appears to try to drag her brother home.  The day quickly turns into a no-holds barred competition when the siblings challenge each other to see who can teach Charlotte the most naughty things in town.
I'm his little sister!
!أنا أخته الصغرى
Und seine Schwester!
Soy su hermana menor.
Soy su hermana menor.
et sa petite sœur.
Nonché sua sorella minore!
Sou a irmã mais nova dele!
Его младшая сестра.