Garu-chan takes on the case of the disappearing house in the center of the port town, starting her investigation while carrying her child on her back. Garu-chan has a hunch that the disappearance of the house is related to a big secret she's been keeping, and she realizes she needs to dig deeper. Garu-chan investigates the house owner's secret past, looking into past events for clues to the case. Garu-chan gets closer to the truth behind the case, discovering that the disappearance of the house is indeed connected to the house owner's secret past. Garu-chan uses her proactive and responsible nature to solve the case, getting to the bottom of the truth and resolving the incident. After solving the case, Garu-chan is thanked by the townspeople and, as a single mother kangaroo, shares her thoughts on family planning. Garu-chan begins preparing for the next case, searching for clues while carrying her child on her back.