EEVEE

You kick things off in a Battle SIM against Sim Trainer Losten's Metagross (Level 50). Since Metagross is Steel/Psychic, a Ground-type move like Earthquake is your best bet here. Don't stress too much about the outcome; it doesn't change anything later on. After the battle, you'll find yourself with a Level 10 Eevee that's still learning the ropes with moves like Tackle and Bite. Wander around the lab, chat with the researchers, and then head up to Professor Krane's office. Your mom, Lily, will be there and mention that your sister, Jovi, is missing. Professor Krane gives you a P*DA from your room – it's like your in-game phone and Pokédex all rolled into one. Check your room (northeast corner, first floor) to grab it. Inside, you'll find 3 Potions in a chest. The P*DA will get new functions later, like the Shadow Monitor. Professor Krane also sends you an email suggesting you talk to Adon, who was playing hide-and-seek with Jovi. Adon's upstairs in the room next to the lounge. He'll tell you Jovi went to Dr. Kaminko's House and mark it on your map. Before you leave the lab, check out the TV in the lounge (northwest room) for a news report about the missing S.S. Libra. Outside the lab, you'll run into Supertrainer Afred (Sentret, Level 5) – a good warm-up battle! Grab two Antidotes from the chest at the end of the sidewalk before heading out. Make sure to save your game before you travel to Kaminko's House!

This place looks like a creepy old mansion, and that's kind of the point! Dr. Kaminko is an inventor, and this place is meant to keep unwanted visitors away so he can work on his… interesting projects. As you get close to the door, a guy named Chobin will jump out, thinking you're a burglar. He'll send his Pokémon after you. After you deal with him, Jovi will show up, acting all high and mighty, and then you'll head inside. Chobin will show a video bragging about Kaminko's inventions. Jovi will call her Minun, Mimi, and follow you back to the lab.