In 1970s Rome, Clara is a nonconformist Spanish expatriate trapped in a loveless marriage to Felice, an unfaithful and abusive businessman, with whom she has three children: Adriana, Gino and Diana.

The website's critics consensus reads, "L'immensità can be excessively immense at times but with an always superlative Penélope Cruz at its core, this vibrant coming-of-age story with undeniable heart is a memorable experience.

"[4] For Variety, Guy Lodge writes that the film "is too palpably pained and heartfelt to be called slight, but it's sensitive and peculiar in ways that feel fragile".

[6] Robbie Collin, writing for The Daily Telegraph, rated the film four out of five stars, deeming the "surprisingly autobiographical" picture to be "a child's-eye-view portrait of domestic sadness and the craving for escape from it".

[15] Stephanie Bunbury of Deadline Hollywood considered that deep down, the film "is fundamentally quite bleak, but it wears a delightfully cheerful face".