If I told you just the plot of “The Best Exotic Marigold Hotel,” you likely wouldn’t expect much. A number of elderly English people decide to “outsource” their retirement to India, where they can get more bang for their buck. Life-changing revelations follow.

But, surprisingly enough, “The Best Exotic Marigold Hotel” works. More than that: It’s a sweet film about age-old crises that never feel old.