Look at the image and read the trailer.

She loved the soldier so much that when he died, she stretched out and extended her heart to him. She laid it on his chest. He took it, and his breath started to come back. He opened his eyes. She was gone, but his life had been returned, as her last gift to him. Where had she disappeared to?

Which best describes the tone of this trailer?

chaotic
tranquil
mysterious
relaxed