The school closure notice suddenly changed, and the entire dormitory building was completely blocked. Water and electricity were cut off, supplies were in short supply, strange noises echoed in the corridors, and the trust among classmates began to collapse. An ordinary college student, Xun Ke, and his roommates were trapped in dormitory 506. They struggled to survive in the closed dormitory building with limited instant noodles, mineral water and emergency supplies they found by chance. They have to fight against the embarrassment of lack of supplies, deal with unknown dangers in the corridors, and hold on to the bottom line in the test of human nature, looking for hope of survival step by step, and waiting for the day when the lockdown is lifted.
