Slow developing story: how I got obsessed w. my sister's ass.
After mom's death, I join my dad's deep sea fishing crew.
Mike tells his girl that his parents host swinger parties.
Sister accidentally stumbles into an undercover operation.
A vacation with his mother and little brother.
His sister, a tent, and only one sleeping bag.
Guy discovers contest between woman & her daughter.
They try to seduce friendly prude couple.