Dave had spent of a lot of time and resources on creating a serum to transform himself into a kaiju or giant monster. He always loved giant monsters like Godzilla and Ghidorah and now it was finished. He didn't want to transform right now as he didn't want to destroy his lab so he left his house on the outskirts of the city to find somewhere he can drink the serum. He looked on his phone and saw there was a big field near a river nearby and so he made his way there. It was rainy and dark that night and as he made his way to the location, he tripped over a large rock and let go of the serum. Thankfully, it was in a reinforced case, but it fell into the river. Dave knew better than to jump into the riven as its waters were moving way too fast. Dave groaned annoyed now that the serum was gone so he went back to his lab to make another. The case eventually went through the rivers path. Who finds the case with the serum?