[Various Film and Television] When New Characters Appear in the Plot

When new characters appear in our favorite movies and TV series that are not in the plot, where will the plot turn? Will we still have so many difficulties? 1. Chen Qing Ling Suppose Lan Qiren has a biological son; 2. Do you know what if Mrs. Sheng's legitimate son grows up; 3. Ode to Joy Suppose there is a new neighbor on the 23rd floor 4. The Pretender If Mingtai had a brother who grew up together Concept: When new characters appear in the known plot, where will the plot turn?