Ep. 80: Go undertakes his initial Project Mew mission to collect Ulgamoth scales from a mine.

80

Go receives his first trial mission from Project Mew. He is given three options for his trial mission, eventually selecting "Gather Ulgamoth's golden scales". Satoshi and Go are directed to an old mine shaft. While exploring the tunnels, Go catches a Dangoro and a Nutrey. The two boys, joined by a man, find Merlarva eggs. The man is revealed to be a Pokémon hunter, and he attempts to escape with the Melarva eggs, but Satoshi retrieves the eggs from the hunter. After a fire breaks out, a shiny Melarva that evolves into Ulgamoth, uses Fire Spin to collect the fire. The Ulgamoth spreads golden scales from its wings, which Go collects. While exiting the tunnels, the Pokémon hunter reappears along with his henchmen, demanding Satoshi and Go to hand over their Pokémon. However, Asahi and Tsurugi arrive and defeat the poachers with their Wulaosu. Once Go's sample of the golden scales are scanned, he officially clears his first trial mission and earns a token. (Source: Wikipedia)