Hard Elo Reset?

Hey guys, so I came back from about a year and a half of inactivity from ranked.

So I was S4 Gold, with plat MMR, based off of OP.GG when i last played ranked a year and a half ago.

Now in my first game on ranked i played against a full on unranked team (only had one plat+gold in S4 everyone else never ever played ranked)

When will i go against people with my skill caliber?

or was it a hard elo reset?