Breakthrough ideas depend upon the generation of new knowledge, which emerge from the conversion of tacit knowledge at the fuzzy front‐end (FFE) of new product development (NPD). The occurrence of stories and metaphors has been strongly linked to tacit knowledge, however, empirical studies that examine how stories and metaphors harness tacit knowledge in the FFE are lacking. In addition, how managers can use stories and metaphors to develop breakthrough product ideas is unclear. To address these gaps, an ‘in‐situ’ empirical case study was conducted in the European subsidiary of a B2C multinational. This study investigated the role, characteristics and interplay of stories and metaphors emerging in discussions between managers and customers ...