Achilles spends days alone watching TV. Then a stranger named Homer appears at his house with an old camping trailer that is painted like a watermelon. He tells Achilles that it is his inheritance from his stepfather and convinces him to accept it. Achilles parks the trailer in front of his house. The Watermelon acts as a magnet and lures weird people to the door (including the ghost of his mother). One day he finds a young runaway asleep inside. Rather than chasing her off like he did with others, he invites her into his home. He doesn't realize that life will never be the same.