Barbie tells a surprisingly mature story about the classic Mattel doll. Director Greta Gerwig brings her own distinctive voice to Barbie, telling a story that examines feminism, mental health and self-image, all through the unlikely lens of Barbie. The film follows Margot Robbie's "Stereotypical Barbie" as she is confronted with the existential dread that plagues the mind of the human playing with her in the real world.
Source：https://www.cbr.com/community-barbie-existential-dread-toy-story/
