The Lost Worldss

In the year 2500, the world has been taken over by unexplainable creatures and metamorphosed zombies. Amidst this chaotic time, an elderly man places a smartphone from the past on a time machine, hoping that its redeemer can change the universe. The phone mysteriously disappears and reappears in a coffee shop, where it lands in the hands of a young man named Kim Min-ho. Kim Min-ho soon discovers that the smartphone grants him extraordinary abilities and informs him of an impending zombie virus outbreak.

Initially skeptical, Kim Min-ho decides to prepare for the impending crisis by purchasing supplies. He encounters Hae-Won, a cashier who dismisses his warnings about the zombie virus. Undeterred, Kim Min-ho heads home to gather his belongings and warn his family. Along the way, he witnesses an unusually large cockroach, signaling the changes occurring in the world.

Back at home, Kim Min-ho receives a call from his mother, who dismisses his claims about the zombie virus. Na-Yeon, the housemaid, also doubts his words. However, Kim Min-ho's smartphone reveals his own attributes and the experience gained from killing the cockroach. Determined to survive, Kim Min-ho continues to explore the smartphone's capabilities and learns about mutated creatures. He also discovers a shopping app where he can purchase items using coins.

Kim Min-ho makes his first purchase, which materializes before his eyes, confirming the smartphone's extraordinary powers. As he continues to navigate the new reality, Kim Min-ho must prepare himself and those around him for the impending zombie outbreak, relying on his smartphone and its abilities to survive in this changed world.