Story to write: Undead Love

(I'll be posting my story ideas here to record how they develop.)

I've been thinking of this story recently and I want to write it down before I lose the details.

Plot: in a fantasy world, a ship runs aground off the coast of a strange continent. The protagonist finds himself separated from the rest of the ship's passengers. The land is in turmoil as humans and the undead battle constantly. The humans seem especially cruel to the undead they capture. Meanwhile an undead hermit seems to be a kindred soul. The p disguises himself and approaches the hermit. The hermit is not fooled by the disguise and surspiciouly slips p a potion that will cause him to "love" the undead. P does chores to build trust with Que. Que is thinking it isn't needed and that p is under get control.
P learns the lands language, share by both sides of the conflict. Que has finished a project for the queen. They make plans to travel to the capital. But as p is gathering firewood, adventurers kill Que. P returns to find Que dead and tracks down the murderers. He kills 3 as they wait for their victims to come. The 4th he chases into a crowded town square. He's disguised again, not realizing the undead can see through it. Explains to the constable who the man is and asks what is to be done with him. The increased townsfolk are a bit dumbfounded, but tell him to bring the heads of the attackers and the body of Que to the capital.

Hmm.. This seems to be a longer story. Summarizing, P travels to the capital and meets the queen of the undead. The body of Que is used to create a new undead, with the memories of Que, but still a new person, Rou. Rou leaves. P is a curiosity in the undead capital. There's the remains of the former population of the lands in cages. Also the other passengers from the sick ship. He convinces the queen to release his fellow countrymen. The queen has P remove his disguise. P tries to help a cage with a little girl, Calexis. This backfires. P fosters Calexis, telling her he will find a proper family for her. The queen returns from her trip. He tells Calexis he will protect her, no matter what. The queen demands his presence. She says the girl must go back into the cage. P quickly ascents, to everyone's surprise. He carries her to the cage. He asks the jailers to open the door. The jailers says Calexis can fit between the bars, but P says "she can but I can't". A murmur erupts from the crowd. P and C enter the cage, and soon the queen appears. Before she can speak, P says "I'm sorry to see you behind bars, S". The queen gives him a doubtful look as P continues. "Why do I love your people?", he asks rhetorically. He explains that the undead are people, different, but still people. But so are people in these cages. While they have lost their homes they are still people and now that the war is over or time to release them. The Queen holds up her finger for silence and ponders. Using a spell she determines that the potion has no effect on P. She agrees to release the prisoners. The shipmates will guide them to the southern human kingdom.
P meets the king, things go badly.
P escapes the dungeon.
P recovers C.
P and half of the shipmates back in the undead capital.
In little bit Ps countrymen stage a rescue, not realizing the situation.
P stands i front of queen to protect her from the Swat team. He takes off his helmet hoping to stop the attack, but a bolt is already on it's way. P is struck down and dies. C wails. The queen sacrifices herself to bring P back. P wakes up on the boat leaving this land.