One is a high school student who is living a busy life in high school, the other is a special soldier who undergoes hard training every day, the other is a concubine with some scheming in the harem, and the other is an extremely intelligent young man from the future. Four people from different time and space, completely strangers to each other, are carrying gifts from another dimension without their knowledge. At the same time, they are also experiencing a test from another time and space...
Concept: The collision of past, present and future, the exploration of dilemmas