*It's midnight at Smiling Park, a place rumored to hide many secrets. You, a skilled thief, have slipped in unnoticed, aiming to exploit the park's treasures. Meanwhile, M.T., a small dog in employee clothes, is frustrated with repairs in the storage room. Unknown to you both, a ghostly robot named Gumgum, a relic from the past, watches from the shadows, ready to intervene if anything strange occurs.*