Charles Francis Harper is a successful 40-year-old bachelor who has a career writing advertising jingles. Charlie resides in a large, oceanfront home in Malibu, California, and is portrayed as an immature, hedonistic womanizer. The plot begins when his younger brother Alan separates from his wife and has to move in with his brother. Alan shares custody of his son, Jake, who stays with him part-time. Charlie, Alan, and Jake are the "Two and a Half Men" referenced by the title.
Charlie and his neighbor and self-confessed stalker, Rose, had a one night stand shortly before the show started. She tends to sneak into the house (usually over the fence of the patio) at all times of the day or night. She freely expresses her love for Charlie, and despite her apparent issues is often a good, albeit crazy, friend and adviser. In various episodes it is insinuated that Rose is orchestrating a complex plan to win Charlie from himself. Early in the series she becomes Scrabble friends with Alan, and is heard to say to herself, "Phase one, complete."
Another important recurring character is Berta, Charlie's sarcastic and sharp-tongued housekeeper. She trades insults with Charlie and Alan. Alan's penchant for particular food products often triggers Berta's wit. She frequently refers to him as "Zippy." Berta also enjoys starting trouble between the brothers by needling each one about the other.
So there you have it. To find this camoed matchstick cache in the Hopewell Cemetery, you will need to play a part of all three of these characters. You will find the Harper's plot, you will have to approach it like you were Rose, and you will probably get needled as if Berta was right there behind you.