Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness/Chapter 17: The Guild's Crew

After the player tells the partner to go to the guild together, that's where they go. The partner stands above the sentry post, and Diglett burrows to the top and says that its the player and partner, after a long time, the whole guild comes out and welcomes them back in. The partner then shares with them what they witnessed in the future, but Chatot doesn't believe them, or Dugtrio, but Sunflora explains what she feels and that changes everyone's minds. Wigglytuff says Chatot was believing them the whole time and Chatot, who stutters, agrees. After they eat dinner, the team talks for a little and goes to sleep to discuss every thing in the morning. Wigglytuff and Chatot say to go to Torkoal the town elder, found at the Hot Spring. The team comes and Torkoal tells them that he knows and he tells them one thing but forgets the other. Torkoal said if he remembered he'd let them know.
 * Brine cave
 * Difficulty 5
 * Boss Omastar(2) and Kabutops

You'll have to travel with. He is lv34. This dungeon is easy with lv34 and lv35 Pokémon at the end of dungeon. and two attack and Chatot shields you. A battle starts. Against the boss use grass moves.

After the battle you have completed the dungeon. You will then meet Lapras.

You can not recruit any Pokémon until after the credits roll.