Paul, an exchange student from London, receives a calling card from the Phantom Thieves' Guild and runs to the CUREtto Detective Agency for help. The calling card looks very flashy, and the listed time is down to the second, making it different from previous cards.

Decchi Agein and Goemon replay Kurea's world of memories. There, Anna and the gang witness Kurea and Luluka's first meeting at the London CUREtto Detective Agency three years earlier.

During the summer holidays, Anna and the others go to Makoto Mirai Academy to help student council president Rei care for the flower beds. While working, they realize that the zinnias that were blooming just minutes earlier have all been cut.