As the closing bell for the last subject of the college entrance examination rang, a boy who gave up his identity as a shooting student and hoped to go to college through the actual written test results threw down his pen with emotion. Even he himself didn't know how many incredible things his choices would cause in the future. On a rainy night, dazzling lightning pierced the sky, strange white fluorescence, and the moment the door across time opened, he came to a world that would undergo drastic changes 2500 years later. God... The secret base has the same shooting technology as in the game, and countless puzzles and difficulties and obstacles follow one after another. Can he hold the gun in his hand tightly, gather the bonds in his hands to defeat the joke played on him by fate, and overcome all difficulties to return to the past and meet the person he admires again?