At the 16th National Software Design Contest, Sienna's team faces a critical moment as Lilian, a key member who usually supports Sienna’s presentation, is late. Sienna struggles to proceed without Lilian's cues, while tension rises due to Lilian’s absence. When Lilian finally arrives, a confrontation reveals underlying rivalry and accusations about fairness and ambition. Lilian insists she won’t let anyone manipulate her thoughts during the defense and vows to take the credit and opportunities for herself. The episode ends with Sienna under pressure to continue alone, facing uncertainty about the team’s success.