Masayoshi Shido views himself as 'Chosen' by god. He is the one to create a country without sin and weakness. To steer it into a prosperous future, there is nothing he wouldn't do.
But like all chosen ones, he receives a divine revelation - there is a woman waiting for him. His partner in heart, mind and soul. She is waiting for him and without her, everything will fade.
But he finds her. Akira Kurusu is the woman chosen to stand by his side. And with this knowledge, he will never let her go.
Goro Akechi has one goal. To make Masayoshi Shido pay for the things he has done - for abandoning him, for leaving his mother alone, for ruining his entire life. Working as his assassin, he is close to finally achieve his goal.
One day, a young woman enters the picture. Introduced to him as Shido's partner, he finds a new one along the way. He will not only fight to make Shido pay for his crimes - but to save her.
In another life, he may have been a traitor. Now, he becomes the leader. Goro Akechi founds the Phantom Thieves. And with this knowledge about her, there is nothing they wouldn't do to rescue her out of Shido's fangs.