Good Grief Afdah unfolds during Marc and Oliver's traditional Christmas gathering, where their dearest friends Sophie and Thomas are also present. The festive night takes a devastating turn when Oliver loses his life in a car crash. Marc spends the following year grieving, finding solace in the support of Sophie and Thomas. However, their lives take an unexpected twist when an accountant report uncovers a secret apartment in Paris. This revelation compels the trio to embark on a journey, where they will confront harsh realities that cannot be ignored.