Note that under normal circumstances if you didn't pay points for it it might not work right because it won't be "fiat-backed" but we can be lax about that here.
As for how it happens, on a Standard Chain, you have something called a benefactor, or more informally a "Jump-chan," a "Random Omnipotent Being" who approached you and offered to send you on the chain, and is "sponsoring" you(IE, the one granting you the stuff you paid points for and making sure all of your stuff still works, among other things) and typically the reason they did that is "they were bored and think you'll be entertaining."