1. Castiel and the Winchesters: Castiel and the Winchesters, Dean and Sam, arrive in town to investigate a strange celestial event caused by Harry's encounter with the celestial energy.
2. First Meeting: The Winchesters quickly realize the boys are not typical humans and soon deduce that they are demigods. They reach out to Harry to learn more.
3. Harry's Revelation: Harry opens up about the events of the previous night, revealing how the celestial energy infused him with newfound abilities.
4. Dean's Suspicion: Dean is immediately suspicious of Harry and the power surge, believing it could be a sinister ploy by some higher being.
5. Demon Activity: The Winchesters reveal that several demonic entities have become aware of Harry's encounter and are seeking him out for nefarious purposes.
6. Protective Allies: Dean and Sam decide to temporarily help the boys navigate their newfound status as demigods while hunting down the demons lurking in the shadows.
7. The Mark of Cain: Harry learns about the Mark of Cain from Dean, who inherited the cursed seal from his distant ancestor, Cain. The revelation deepens Harry's doubts about his own fate and purpose.
8. New Threats Emerge: As the boys continue to hone their powers, they must contend with new threats, including a mysterious cult that seeks to exploit their divinity for their own ends.
9. The Celestial Alignment: Dean and Sam explain that the celestial alignment that triggered Harry's power surge is part of a greater cosmological convergence, which could bring unforeseen consequences.
10. Preparing for Danger: The Winchesters and the boys team up to face whatever challenges lie ahead, understanding that the fate of the world and their own lives may be intertwined in ways they never imagined.