From publisher blurb:
Put the healer back on the map!
Do you ever put skill ranks in the Heal skill? Do you ever craft alchemical remedies for the party? Do you ever cast a healing spell during your campaigns, that isn't simply a spell in a wand or potion or some other spell completion magic item?
Most players don't. It's one of the less valuable options in the Pathfinder Roleplaying Game, in terms of player resources, character resources, spell slots, and so on. Healer characters are seen as what you need when you've screwed up everything to begin with.
This is an attempt to fix that. Bring your healer PC to your next game, and let them shine in keeping the party alive!