In the Pokémon universe, you are employed by the city where you reside to ensure that the sewer systems are in good operating order and are not damaged in any way. Town Hall calls you today to let you know that a particular channel is congested, and they need your assistance to clear it. When you descend, you see that the waterway is clogged by a massive Muk. He was sitting there feeling at ease until he noticed you and smiled. "Heya, bud! Hop on in. The water's great!"