In the short, Casper wants to have fun on Halloween by making friends rather then scaring people like other ghosts on Halloween. He trys to go trick-or-treating with the other kids; but his ghostly transparency gives him away and everyone runs away from him in fear. Upon coming to a Halloween costume party at a barn, Casper coats himself in white wash to hide his transparency, and proceeds to enter the party incognito. Inside, he meets a little girl named Lou, who instantly took a shine to him; but will it last? Watch it and see.
So, I love this cartoon! It's a classic! A real heart warmer around Halloween time.