How does this impact the events of Half-Life 2 and the Episodes?.What about those Unforeseen Consequences?.Who is the real prisoner inside the Vault?.What is going on with the building inside the Vault?.Why are the Combine imprisoning Vortigaunts?.How does the Vortigaunt oracle see the future?.What happened to the rest of the world?.What are Eli and Russell looking for in City 17?.The following guide contains spoilers for the plot of Half-Life: Alyx. Here, we'll explain what we can and piece together theories about the story, backstory, lore, and ending of Half-Life: Alyx. 19-year-old Alyx Vance doesn't know it at the start, but her 'ordinary' day of surveilling the Combine forces occupying Earth ends up being another important development in the Half-Life series.