In the heart of Fluorite City, where neon signs advertised the latest toothpastes and the fresh scent of mint was in the air, three friends - Lena, Igor and Maks - were completing their next shift at the Secret Academy of Oral Hygiene. Everything seemed business as usual: exploring the latest brushing techniques, experimenting with mouthwashes and lectures on the power of flossing. However, that evening Lena noticed something that changed their lives forever. As they walked out into the darkness illuminated only by the light of a tooth-shaped lantern, Lena noticed an unsettling blackness spilling beneath their feet. At first it was an innocent stain, but it soon began to grow larger, taking the shape of an ominous shadow. Maks leaned over and heard a quiet sloshing sound - as if something was chewing food scraps right off the pavement. "This... definitely not normal," whispered Igor, looking in horror at the strange, shiny creatures appearing, resembling bacteria enlarged to the size of a rat. They had sharp teeth, slimy bodies and glowed in the darkness with a greenish glow. Suddenly, one of them spoke with a hissing voice: "The Fluorites are lost, no one can protect your teeth from our army of Trunks anymore!" The friends exchanged glances full of determination. Lena pulled out a special sonic-plasma toothbrush from her backpack, Maks grabbed a bottle of ultra-powerful mouthwash, and Igor pulled up his hood, under which he hid a packet of the latest dental floss. The night battle began, and the city of Fluorite trembled in anticipation.... Just then, as Lena caught a glimpse of a large black gate opening into the city's underground in the distance, the Friends heard the sound of footsteps approaching fast from the direction of the gate. Was it support coming, or something far more terrifying...?