It's hard to say for sure. It could be inspired by real-life situations but transformed and embellished for the sake of the narrative. Maybe some parts are true, while others are made up.
It's most likely fictional. Usually, when a story is titled like that, it's made up to engage and entertain rather than being based on real events. But sometimes, elements might draw inspiration from real-life situations, but not be a complete true story.
Well, it claims to be a true story. But sometimes in such cases, there could be some creative liberties taken for dramatic effect. However, the core elements are said to be rooted in reality.