Start Wherefore Art Thou Juliet by talking to the couple in Amanaki Town. They will tell you that their daughter and her lover plan to kill themselves, and ask you to save her. They then give you a location where she might be.
Locate Nadia and her lover.
Clear the area of aggressive animals.
Speak to Nadia
After talking to the couple about their daughter, a waypoint will appear on the map. Make sure you have ammo, and then leave the village. After leaving, cross the bridge and pass tha car, this will bring you to the mission area.
Keep an eye out; past the car, in the clearing, is a dead male body and a large number of the komodo dragon creatures. These animals can inflict a lot of damage and can move very quickly, but only take a few bullets to kill. You have to kill them all to progress with the mission. Take out as many as you can while in the clearing, and when you have to reload, start backing up to the road. You should have enough time to kill the rest. When you're done, head back to the clearing and go talk to the girl standing on the rock.
Jump onto the rock, and go to talk to the girl. It turns out to be Nadia, the girl who your supposed to be saving. After talking with her, you'll find out that she was supposed to be leaving with her lover, but instead he started talking about "dieing together" and attempted to shoot her. The shots attracted the animals, and he was killed. After this, you will be given your reward.