Soul Barter is a 3D animation in the style of a video game trailer. During her mysterious journey through a magical land, unfamiliar memories repeatedly strike a young girl wearing a black cloak. Meanwhile, there is a voice in her mind guiding her actions. For a long time, she couldn't distinguish reality from her dreams. After witnessing a princess who was identical to the woman in her strange memory, the girl realizes that this is not a mere coincidence. She decides to follow the voice in her head to explore the truth.