The Ukrainian melodramatic mini-series "The Ex" tells the story of a renowned gymnastics coach named Regina, who trains future champions. Her students often become winners of competitions and Spartakiads. The young woman has managed to make a brilliant career in sports. In addition, Regina is eagerly awaiting an upcoming family celebration - the anniversary of her marriage to her husband Yuri. But everything unfolds not according to the planned script when Regina learns about her husband's infidelity.