Au Revoir Le Bonheur is a comedy about four brothers who promise, during their father's funeral, to put their differences aside to pay him a final tribute. The four brothers who are completely opposed to each other, their wives and their numerous children go to the summer house, on the Magdalen Islands, to offer their last farewells and spread the ashes of this man who was so important to each of them . When Nicolas, the youngest brother, loses the urn containing their father's ashes, conflicts begin.
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To commemorate the passing of their beloved father, four brothers very much at odds congregate for one final week at their summer house in the Magdalen Islands. As they bid their final goodbyes, the four brothers revisit their past joys and hardships as each one of them struggles to give meaning to their very different lives.