Marimo runs into Udonko, who is on her way to look for an unidentified flying object that crashed into a nearby park. While searching for the UFO, they meet up with Tomarin and Tanaka-san, who points them in the direction of some peculiar "playground equipment."
An unidentified delinquent 
object fell in a nearby park.
Algo cayó en un parque.
Um objeto delinquente não identificado
caiu em uma praça aqui perto.