You can start this substory during Guldo’s Claim to Fame, right after you get a Dragon Ball from Vegeta and move hiding spots with Bulma. Bulma, the person who gives you this substory, is a little bit angry that she wants to do some work, but is lacking in materials, which is where you come into play. She hands you a list of items she needs, consisting of three Iron Ores and three Alien Whitefish Fin Muscles. It’s highly likely you’ve got the Iron Ores already, especially if you’ve been “mining” the nodes you see while exploring. If not, don’t worry, as there is a node not too far from Bulma that should yield the Iron Ores needed.

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(1 of 2) There is a mining node not far from Bulma that’ll give you the Iron Ores

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There is a mining node not far from Bulma that’ll give you the Iron Ores (left), Look to reel in the bigger fish, as they will give you the Fin Muscles (right)

For the other item, you will need to go fishing, with there being a spot a little bit west of Bulma’s camp. You don’t need to use any items to enhance the drop rates, but you do need to be mindful of which fish you reel in, as the bigger of the two are what will give you the Fin Muscles. If you don’t see a bigger fish, exit out of fishing and retry until you get them. Once you’ve fished enough and gotten the Fin Muscles outlined above, then return to Bulma with both sets of items to finish the substory.