"How to Ruin Christmas" is a multi-episode comedy show that tells the story of Tumi, an African-American woman who unintentionally becomes the cause of her sister's misfortune. It all starts as usual: the main character goes to her hometown to celebrate the Christmas holidays with her family. At first, everything goes well, but then the long-awaited wedding ceremony arrives, which Tumi inadvertently ruins. Naturally, she is not very proud of her actions and actively tries to fix everything, but it turns out to be much more difficult than she would like. Fortunately, Tumi never gives up.