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Earth has survived catastrophic solar winds under the protection of the Grid, its planetary defense shield. Kim Sae Ha, an employee of the Bureau, encounters a murderer. Jung Sae Byeok, a detective, is dispatched to arrest the murderer. While in pursuit of the fugitive, she witnesses an unbelievable phenomenon: the founder of the Grid - a ghost of the past - has reappeared after 24 years. But why is she abetting the fugitive? This is a thriller that pursues the mysterious truth behind what saved humanity from an apocalypse.
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Episode 1
It's 2005. Solar winds fall upon the Earth. Fast forward to 2021. Detective Jung Saebyeok witnesses a phenomenon while arresting a murderer.
