Rock 'n' Roll! That's one great plot I'll be sure to use. The great thing is the deviousness of the plot. It starts out as as standard "bash-the-evil-wizard-and-free-the-children-and-collect-the-reward" but the twist will really hit the adventurers hard. Go to Comment
The secret for immortality has been discovered by an eccentric wizard/mad scientist. Its found you need to reapply once a month. As people stop dying, and the birth rate increases exponentially, people are forced into homelessness, because of the need for food reamins the same, and food is not being produced fast enough to feed the undying population. The PCs have to find the creator and kill him, and destroy production, to save the world from undying, unending torture from hungryness.