With a Latourian Actor-Network Theory approach, Urban Design on the Move follows a young design team's transformative journey of implementing the Europan 4 winning project at Heraklion's old city waterfront in Crete, Greece. During the design trajectory, the team mediates several controversies that become decisive for the project's outcome. Together with Hercules, a fictional character and friend of the team, they accompany the transformation of the competition's design strategies into implemented urban practices. In a unique storytelling format, the author unpacks the team's design diplomacy skills in promoting their idea of an open and porous city welcoming heterogeneous publics-laying bare the informal and unsaid aspects of the design implementation process. With forewords by Didier Rebois and Albena Yaneva a compelling analysis of urban design in the making written in a unique storytelling format an inspiration for urban designers in uncertain environments