This Substory can be gotten during Intermission 3, right when you first gain control of Gohan and requires you to use him. Travel to the East Ravine Area to find this substory. Bulma is worried about her father, as he is completely absorbed in his work, so she asks you for your help. He needs some materials, which are in another section of the map, so he asks you to get them for him. The items are a Hard Dragolyte, a Large Dorgalyte, and a Bulky Dogmalyte. You may be thinking that the names are similar to one another and you would be right, with the reasons being clear soon. Fly to the location marked on your map, which is the elevated portion by the waterfall. Speak to the NPC there and pick one of the choices to be shown where that item is located.

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(1 of 3) Talk to the NPC to learn the general area of each item

There is a catch, though, as previously pointed out earlier. Each of the little areas here contains a number of purple orbs, all of which are fake items and not the one you need, except for the real item, of course. Since there is no penalty in picking up the wrong items, you can literally just grab them all. Once you find the right item, move to the next area and do the same thing there. Once you find all three items on his list, you will automatically return to Briefs and complete the substory.