When a distant emergency summons the wealthy Bennett family back to the U.K., disrupting a vacation on the Mexican coast in Acapulco, simmering tensions rise to the fore between scions Alice (Charlotte Gainsbourg) and Neil (Tim Roth). The delicate balance of the deceptively close‐knit clan, including siblings Colin and Alexa (Samuel Bottomley, Albertine Kotting McMillan), is irrevocably upset.