Imagine a world where children's imaginary friends are not just figments of their imagination, but real beings that persist into adulthood. In this unique reality, we meet Bea, a 12-year-old girl who has recently lost her mother. One day, as she roams the streets of New York, she encounters a gigantic purple monster. Intrigued by this unusual sight, Bea embarks on a journey to uncover the hidden truths of the world and ultimately decides to remind the grown-ups of the forgotten companions from their childhood.