with wony you gain access to season when you reach lvl 40 and beat the boss.
every wony player can progres through the season by gaining level(max 100) and complete the season track
the track is split in 2 parts: normal and premium
normal: FREE for everyone who has wony. contain most of the new seasonal content like new weapons, set and exotics (some exotics are tied to specific game modes). You also get seasonal caches for item of this season and legacy caches for content of past seasons (note that everything can also be dropped from open world without time restricrions).
premium: PAID and not included in wony(must be bought separately), only season 1 was included. gives you aestetic items, caches and additional resources. Keep in mind that the caches you get are the same as the normal track so no exclusive items for premium except skins and apparel.
the seasonal content(manhunt, leagues ,global events and apparel events) are free for wony players
summit is also unlocked if you own wony
Year 1 pass is a completely different pass and IS NOT included in wony
I hope this help