The following day, as you and mom are enjoying another Alolan dayS/nightM, the doorbell rings again. Mom asks you to open the door, only for Kukui to let himself in again. He's here to take you to the festival in Iki Town, but will show you how to catch Pokémon on Route 1 first.
Following the Professor
The professor is waiting for you outside. Instead of heading west, however, head east and towards the tall grass to the north. Kukui will then show you how to catch Pokémon using his Rockruff. After the tutorial, he will give you ten Poké Balls and five Potions. You are now free to explore the route, and catch some Pokémon of your own!
Route 1 is largely divided into three parts—the area near your house; the area overlooking the bay; and the area near Iki Town. The wild Pokémon you can encounter in these areas vary, as do their levels. In addition, before the festival in Iki Town, wild Pokémon cannot break out of the Poké Balls thrown at them.
Grubbin is a Bug Pokémon that evolves into Charjabug at level 20, then Vikavolt when leveled up in a special magnetic field, which will come very late in the game. The line learns a variety of useful moves, and even gains the Electric type in its final form.
After you've caught the Pokémon you like, make your way through the route. Behind the second patch of grass, you can find a Potion. Ahead, you can fight Youngster Jimmy and Lass Audrey. Behind the patch of grass near Lass Audrey, you can find a Poké Ball. There's also a fence on a small ledge. Walk around it and you can find an Antidote.
At the intersection, you'll notice there are three paths to take. However, the path north and south are blocked off, so take the path west. Behind the patch of grass, you can find another Potion. Ahead, you can fight Preschooler Oliver. Behind the last patch of grass, you can find a Paralyze Heal.
As you enter Iki Town, Hala approaches you. He says that each of the four islands has a guardian, and that the festival is for the guardians.
Ahead, you'll meet with Hau, along with Kukui and Lillie. Kukui says that during the festival, people battle in the name of Tapu Koko, so you'll have to battle Hau. Before that, however, Hala heals up your Pokémon.
Hau has caught a Pichu since your last battle with him. Its Static ability can paralyze your Pokémon if they make contact, in which case the Paralyze Heal from earlier will help. Hit his starter with your own starter's super effective move again.
After the battle, Tapu Koko will cry in approval of the battle. Hala will then equip you with a Z-Ring. This is when you head home after the festival.
After you check the door to let Kukui in, you will head outside, only for Lillie to tell you that Kukui needs to see you. This when your mom meets Lillie. Then, Lillie says that Nebby is a Cosmog, a rare Pokémon, and that it saved her once from a certain group of people who want its power. After she finishes speaking, the player heads to Kukui's lab. He will show the player the Pokémon, Rotom. The Rotom will go inside the player's Pokédex, becoming the explained Rotom Pokédex. After explaining the Island challenge, he'll want you to go to the Trainer's School. On the way there, Lillie takes you into the Pokémon Center and explains the various services found inside: the nurse at the counter will heal your Pokémon for free, the PC allows you to withdraw or deposit Pokémon you've caught, the Poké Mart allows you to purchase various items (the list of items available grows as you reach certain points in your journey), and the Pokémon Center Café allows you to purchase various drinks, which come with a free item and some Poké Beans if this is the first drink purchased at that café that day. After this, you now have access to two new options in your menu: Quick Link, which allows you to trade and battle with people over your local Wi-Fi network, and Festival Plaza, which allows you to do the same with players world-wide. The Plaza also gives you access to the Global_Trade_System/GTS, where you can search for or deposit specific Pokémon to trade, and Wonder Trade, where you can send off your Pokémon to a random person somewhere in the world and get a random Pokémon back from that person. Two other options you now have are the QR Scanner and Battle Videos. Upon leaving and talking to Lillie next door a Tauros can be seen blocking the path to Hau'oli City.
Once here, Kukui will introduce the teacher of the School, who wants you to battle all four of her students. You will also get the Exp. Share, a very useful item that will make all your party's Pokémon gain experience points even if they did not participate into the battle. The students you are to battle are located as follows: a Young Athlete on the right side of the school by the incinerator, a Rising Star on the courts in front of the school, a Youngster on the right side of the building just beyond the gate into the grassy areas, and a Preschooler by the stairs on the first floor of the school. However, the Rising Star will ONLY battle you when you beat the other three. Also, Lillie will heal your Pokémon for free whenever you talk to her.
When you defeat the Rising Star, he will give you TM01 Work Up. Then, someone over the PA system will call you, making Lillie wonder what you did to get called over. If you say you did nothing, Lillie will sound suspicious, whereas if you say "Well...", then Lillie thinks you did something. When go to the 2F area of the School, the teacher will say she is fascinated and will challenge you to a battle. The second room on the second floor will teach you a lot about battling if you speak to everyone in the room, check the blackboard, and read the book at the back of the room on the right side.
Upon defeat, she will give you 5 Great Balls. After that, the CaptainIlima will meet you for the first time. He welcomes you to Alola and says he's looking forward to you taking on his trial, then leaves. The entire school gathers to see you off, and Lillie decides to show you more of the city. Unfortunately Tauros is still impersonating a roadblock. Hau and Hala are there, and the latter requests you pat Tauros first. Hala then takes Tauros away and you are free to head in to Hau'oli City with Lillie and Hau.