“Seven Something” is a romantic film crafted by a trio of directors, resulting in a narrative split into three segments. The initial segment, titled “14,” explores the challenges faced by two adolescents in the realm of social media. The second segment, “21/28,” delves into the lives of two ex-lovers, both actors, who reunite professionally after a seven-year separation. The final segment, “42.195,” follows a woman who encounters a young man inspiring her to finish a marathon.