Comic-Con Special #1

Supergirl battles an alien escapee from Fort Rozz on the streets of National City. After defeating the menace, her sister Alex scolds her on her headset for not paying attention to the mission briefing. Supergirl hears crying nearby and goes to investigate. She finds a young girl named Tracy, who had been left alone by her older sister so she could go to the store. Tracy was frightened by the battle outside, so Supergirl comforts her by talking about her relationship with her own sister. Alex hears everything over the headset. Soon, Tracy's sister returns and Supergirl flies off for home.