The Phantoms break into Madarame's palace to steal his treasure, only to find it is a trap. Revealing the treasure is the original "Sayuri" painted by Yusuke's mother, Madarame is defeated by the Phantoms and admits his crimes in the real world, increasing the thieves' reputation.

While making steady progress through Kaneshiro's Palace, Makoto manages to become closer with the rest of the team. With the route to the Treasure secured, the Phantoms confront Kaneshiro's Shadow, taking advantage of his weakness of money in order to defeat him. Before the Palace is destroyed, Kaneshiro informs the Phantoms about a man in a black mask who is able to enter Palaces.

The politician who was the mastermind behind all of the cases has been successfully reformed by the Phantom Thieves. However, the public’s reaction was not as expected. In order to eliminate the world’s distortion and enforce the justice he believes in, Ren proceeds towards the final battle along with the Phantom Thieves of Hearts.