Hajime Aoyama roams city streets with his mobile coffee truck, Tako Coffee. He crafts each cup meticulously; the process and flavor offer customers respite, helping them relax and unwind during personal struggles. Though presenting a carefree, princely exterior, he conceals a significant secret tied to a violent past involving criminal associations.

This background starkly contrasts his current life. Previously entangled in danger, he is now hunted by the mysterious gangster Sugi Sanpei, known as Pei, due to unresolved history between them. Hajime's shift to coffee vending marks a redemptive journey, yet he sometimes grapples with shedding old instincts, especially when threats from his former life surface.

Interacting with customers forms his core. He listens to their troubles, providing comfort through coffee that often brings clarity or peace. Key among them is Gakine Shima, an office worker battling workplace alienation and inadequacy, who confides in him after witnessing his dedication. His relationship with pursuer Sugi Sanpei evolves from antagonism toward a complex dynamic of mutual understanding and eventual reconciliation, mirroring Sanpei's own redemption.

Hajime's development involves directly confronting his past. The gradual reveal of his backstory highlights his efforts to build a healing-centered new life, paralleling his need for atonement. This culminates in facing figures from his history, testing his commitment to his new path and resolving lingering conflicts.