Return To Aether Paradise

Walkthrough: After Gladion having made the connection that the Aether Foundation has been working with Team Skull to retrieve Cosmog, you, him and Hau will all go to Aether Paradise to find and save Lillie and Cosmog. You will arrive at Aether Paradise in the Docks, having to battling your way past numerous Employees to reach the elevator. Since the elevator cannot go down without Employee Access, you will have to head to the first floor. It is here that you will find and battle Faba, who will eventually send you on a wild goose chase in search of Lillie and Cosmog.

Once Faba is defeated, Gladion will demand he give you access to the secret labs down below. After battling through more waves of Aether Foundation Members, the three of you will discover that Lillie and Cosmog aren't here, but rather on the floors above. You will then travel back up via the elevator, having to once again battle Faba and other Aether Employees. But it doesn't stop there! On your way to Lillie, who is actually beind held by Lusamine herself, you will have to battle Team Skull Members as well, including Guzma. The two groups have now formed an alliance!

On top of having to dealing with Team Skull and the Aether Foundation, the Ultra Recon Squad will also show up and attempt to battle you to prevent you from reaching Lusamine. They have come to an agreement with Lusamine that sees them allowing her to use Cosmog to open an Ultra Wormhole so all of them can prevent Necrozma from breaking free and stealing the light from The Alola Region.

Once all the Aether Foundation Employees, Team Skull Members and Ultra Recon Squad have been dealt with, you will finally find Lillie trying to convince Lusamine to let Cosmog go at the end of Aether Paradise. Lillie will warn Lusamine that her machine could kill Cosmog, but Lusamine believes the end result will justify the means she is taking. Gladion will try to reason with Lusamine - revealing that she is the mother to both Lillie and Gladion - hoping what happened to their father where Ultra Space is concerned would be enough to change her mind. But it isn't. She will then battle you.

After you defeat Lusamine, she will continue with her plan and use Cosmog to open a Wormhole. By doing this, Cosmog will take on a new form that doesn't see it move at all. From there, Lusamine and Guzma will head into the wormhole WITHOUT the Ultra Recon Squad, double-crossing them in hopes of selfishly defeating Necrozma all by herself. The Ultra Recon Squad will be very upset by this; however, they will ultimately give you the suggestion of summoning the Legendary Pokemon in hopes of using it to travel through Ultra Space and find Lusamine, Guzma and Necrozma.

After all of this occurs, Wicke, who is actually on your side, will suggest staying the night at Aether Foundation before proceeding with finding Lusamine and Guzma. The next morning, you will discover Lillie has decided to change her appearance, in what she calls her Z-Powered Form. From there, Gladion will entrust you with a Masterball and one of two flutes needed to summon the Legendary Pokemon. He will then give Lillie and you a ride to Poni Island, hoping the Kahuna of the Island can help you find the other flute, while Hau looks to grow stronger in hopes of one day being able to protect the ones he loves.

All Trainers That Will Be Battled, From Arriving To Lusamine:

Aether Foundation Employee - Level 40 Dugtrio, Level 40 Toucannon

Aether Foundation Employee - Level 40 Kecleon, Level 40 Stoutland

Aether Foundation Employee - Level 40 Arbok, Level 40 Lurantis

Aether Foundation Employee - Level 40 Parasect, Level 40 Drifblim, Level 40 Sudowoodo

Aether Foundation Employee - Level 40 Primeape

Aether Foundation Employee - Level 40 Arcanine

Aether Branch Chief Faba - Level 43 Hypno

Aether Foundation Employee - Level 41 Muk

Aether Foundation Employee - Level 41 Magneton

Aether Foundation Employee - Level 41 Porygon2

Aether Foundation Employee - Level 41 Huntail

Aether Foundation Employee - Level 41 Gorebyss

Aether Foundation Employee - Level 41 Lileep

Aether Foundation Employee - Level 41 Anorith

Aether Foundation Employee - Level 42 Magmar, Level 42 Houndoom

Aether Foundation Employee - Level 42 Electabuzz, Level 42 Manetric

Aether Foundation Employee - Level 42 Ledian, Level 42 Pupitar

Aether Branch Chief Faba - Level 44 Claydol, Level 44 Bruxish, Level 45 Hypno

Team Skull Grunt - Level 42 Golbat

Team Skull Grunt - Level 42 Raticate

Team Skull Boss Guzma - Level 45 Golisopod, Level 45 Masquerain, Level 45 Pinsir, Level 45 Vikavolt

Ultra Recon Squad Dulse - Level 47 Poipole

Aether President Lusamine - Level 47 Clefable, Level 47 Lilligant, Level 47 Lopunny, Level 47 Milotic, Level 47 Bewear

Items:

TM29 (Docks) - Received Earlier From Wicke

X Sp.Atk (Docks) - Southwest of Boats

Rare Candy (Docks) - North of Elevator

TM06 (Docks) - Far Southwest

Big Malasada (Entrance) - From Wicke During RR Episode

Dubious Disk (Entrance) - Defeat Faba After RR Episode

Big Malasada (Entrance) - From Wicke After RR Episode

Stick (Entrance) - From Aether Employee At Top Exit

Full Restore (Lab A) - Near PC

DNA Splicers (Lab A) - From Aether Employee After Defeating Necrozma

Prison Bottle (Lab A) - From Aether Employee After Defeating Necrozma

Soul Dew (Lab A) - From Aether Employee After Defeating Necrozma

Hyper Potion (Outside) - Southeastern Area

Heal Ball (Outside) - Southwestern Area

Full Heal (Outside) - Western Platform

Full Heal (Outside) - Eastern Platform

Master Ball (Outside) - From Gladion After Defeating Lusamine

Big Nuggest x55 (Outside) - From Wicke After RR Episode

Revive - From Janitor After RR Episode

Max Potion - From Janitor After RR Episode

Guard Spec - From Janitor After RR Episode

Rare Candy - From Janitor After RR Episode

Post Game

Details: After finishing defeating the RR Episode, you can return to Aether Paradise once again to battle Faba with his best team yet.

Trainers:

Aether Foundation Faba - Level 63 Claydol, Level 63 Bruxish, Level 63 Raichu, Level 63 Alakazam, Level 63 Hypno