30 years ago, when members of a religious cult known as Heaven's Veil take their own lives. The truth behind what really happened remains buried deep in the memory of the sole survivor, a five-year-old girl. Now as an adult she returns to the compound with a documentary crew. They soon discover something that is far more terrifying than anything they could have imagined.
As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment - the fate of Earth and existence itself has never been more uncertain.
Recently divorced mom Lauren and widowed dad Jim let their friends push them into a blind date, which goes disastrously wrong. Unsurprisingly, neither wants to see the other ever again. However, fate intervenes when both Jim and Lauren, unbeknownst to each other, purchase one-half of the same vacation package at a South African resort for families, during spring break. They and their children are forced to share the same romantic suite and participate in a slew of family activities together.