Gathering of plums or prunes denotes pride, power and place.
Dream dictionary: plums or prunes dream meanings
Plumes in dream are interpreted as a symbol of sexual desire. If the plums are ripe, we will get what we want, but will suffer love pains if the plums are green and not matured well. Some authors suggest that if the plums are prunes, we need to let pass a time before make known our desires.