"I want you to know: I use it only to remember." Young, well-spoken, and educated, Valentina Sorenson is the perfect candidate to lead the defense of mnemoin, the illegal narcotic that unlocks its users' deepest memories and leaves them brighter and better than before. But when an overwhelming show of support for Valentina's decriminalization campaign meets with strong arguments from her opposition, she must drive herself deeper into the memories she thought she'd left behind, and risk slipping further into her own addiction. A dealer with his own demons struggles to hold on to the one person...