Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness/Chapter 18: Lapras

When the chapter first starts your partner and you talk about the hidden land. Then when they look at the sunset a pokemon swimming across teh sunset, and they dont know what the pokemon could be. But at night you get to figure out the pokemon if u didnt before, its lapros. Then you see lapros and the guild master (wigglytuff) talking about how they met and alittle about the hidden island. Then you wake up from the guild and when the whole guild gets together they notice the guildmaster is not there. So they still take out there plan to head to the hidden land with out the guild master. Then the guild forces chatot to lead the guild on the mission. Next you head through Brine Cave and when you reach the half way point, Team Skull comes to take your partners fragment. So in the other half of the cave you have to stop team Skull before the get into the hidden island. After you get your partners fragment back the bad bandits chatot was talking about comes out to fight you. After you beat them you get ready to go in the hidden island, and then thats the end of the chapter.

Hope this helps good luck!