The film stars Levy, Ruth Negga, Himesh Patel, Celia Imrie, David Bradley, Arnaud Valois, and Luke Evans.

Sophie, who had recently ended a serious relationship with her boyfriend Terrance, brings them to meet a date, which Marc leaves to spend time with Theo, a French man he had previously met at a London performance art exhibit.

Theo brings Marc to the Claude Monet room at the Musée de l'Orangerie, explaining that it had been painted after the death of his family, and they kiss.

A man enters and introduces himself as Luca, a Berlin native who had won Oliver's art scholarship before growing closer to him, finally leading to Marc telling the truth about the nature of their trip.

The website's consensus reads: "A solid first feature for writer-director Dan Levy, Good Grief offers a generally affecting look at love after death whose refreshing sincerity only occasionally veers into sentimentality.

[12] Peter Debruge from Variety gave a positive review writing: "Levy has crafted an emotional story strong enough to withstand the zings of an ironic generation, who’ve been conditioned to snipe at sincerity.

[14] Brian Tallerico, at RogerEbert.com, gave the film a score of two out of four: "Levy has a strong on-screen presence—he's a remarkably natural, likable performer—but he struggles a bit to find his voice as a writer and director with Good Grief, a modest study of the impact of loss that pushes a few buttons harder than it should and fails to fill out its ensemble equally".