Canaan, a covert agent with the power of synesthesia (the ability to combine senses), arrives in China just in time to save her friend, the young photojournalist Maria Osawa, from a deadly attack by the terrorist organization known as Snake. But Canaan has tenuous ties to various Snake operatives, which places Maria in peril.

When Canaan kills an old man who is threatening Maria, she provokes a young mutant to murderous revenge. So as Maria and Canaan enjoy their reunion, the evil boy plots a terrifying plot to kill Canaan as penance for her sin of killing his friend. Meanwhile, Minorikawa finds the mysterious Hakko may know more than Santana will allow her to admit.