On June 18, 2021, in the current century, human civilization observed an abnormal space-time jump phenomenon near Saturn, and found here a "letter" sent by a civilization in another space-time dimension before it was on the verge of destruction.
However, the internal relations of human civilization are also complicated. The content of this letter is destined not to be taken seriously. Outside the earth at this time, the letter was also sent with the Weeping Tetrahedron. For the safety of the letter, one of them will rush to the earth to make contact with human civilization. At this time, whether it is internal or extraterrestrial contact, everything has reached a delicate point, and balance and collapse may begin at any time...
Intention: writing and playing