The psychic suspense story revolves around people who possess the ability to infiltrate people's minds and manipulate memories. Their powers have been used in the underworld for covering up incidents, assassinations, and other deeds. These powers can not only destroy other people's spirits, but also corrupt the users' own hearts at the same time. The users had to protect their fragile and insecure hearts, as if chained to each other. They are called "pets" out of fear and despising.
Hiroki and Tsukasa are living and working at Kenji’s scuba diving shop-cum-bar. The pair hope to one day emulate Kenji and open a place of their own. But it turns out Kenji has also been doing some shady jobs on the side. When he starts acting strangely, Hiroki and Tsukasa take action.
Kenji falls unconscious after seeing hallucinations of Hiroki and Tsukasa. Katsuragi then arrives on the scene and orders Hiroki and Tsukasa to “crush” Kenji because of the secrets the latter has discovered. Taking Hiroki’s objections into consideration, Tsukasa proposes a way for the two of them to take care of the situation without crushing Kenji.
Hiroki is delighted that he and Tsukasa have managed to open a store of their own. His joy is short-lived, however, as Katsuragi soon whisks Tsukasa away on another job. His mission this time is to take control of Chinese Mafia member Inui in order to assassinate a certain VIP. However, manipulating Inui's memories turns out not to be straightforward.
Tsukasa and Katsuragi have found out that Hayashi has been in Japan the whole time. They set about trying to capture him, but Hayashi's countermoves make a mockery of their efforts. Meanwhile, Hiroki has been left alone in the store by Tsukasa and is becoming emotionally unstable.
Tsukasa finds himself face to face with the fugitive Hayashi. While Tsukasa expresses a mixture of joy at their reunion and bitterness at having been abandoned in the first place, it appears that the two of them are now at cross purposes. Back at the hotel, Satoru goes to the bar and meets Jin, a woman connected to the Company. Satoru is wary, but Jin has an offer to make him.
Hayashi is determined to take Tsukasa with him, even if he has to alter Tsukasa's memories in order to do so. Tracing back along the path of those memories reveals Tsukasa's dark past. Nevertheless, Hayashi seems to have succeeded in reaching his former protégé's peak, but Tsukasa has an all-or-nothing trick up his sleeve.
Meiling is also an image user, but unlike Hiroki and the others, she hasn't been provided with a complete peak. However, that is exactly the type of pet that the Company prefers. With Meiling in tow, Company employee Long appears in front of Dahao, ready to settle an old score for the CEO.