I'm not entirely sure specifically what 'ladronas de almas based on true story' is about without more context. It could potentially be about some kind of spiritual or supernatural entities (the 'ladronas de almas' which might mean'soul stealers' in Spanish) that are based on a real - life event or situation.
I'm sorry, I don't have any specific examples of 'ladronas de almas based on true story' as I'm not familiar with the exact story. It could be a very specific regional or cultural story that isn't widely known.