You decide to go see Ja' cko. You step out of your house, and walk to the backyard of someone you don't know. There, you find a portal.
You've been going to this person's backyard for basically ages, but you still don't know who owns it. Maybe you should find out now? Surely Ja'cko couldn't be that desperate to see you? In fact, Ja'cko probably isn't desperate to see you at all.