You were on the tropical dessert islands, Triple Gelato cookie died due to an strange, familiar-looking cookie, named Monocookie

After Monocookie introduced you the Killing game and it's rules, you, alongside the cookies, left the area of the island they were, Monocookie, watched every of their movements

A few days later, after you had a ahort breakfast, you were investigating the place and suddenly found Monocookie behind you

"Hello there dear cookie!~ How's the day going?" -he said, smiling, despite inside that smile there weren't any good intentions-