This study presents an experience of a psychological emergency service implemented in a public health facility in São Paulo, Brazil, highlighting its innovative nature by operating outside university training clinics, where such practice is more common. Unlike traditional psychotherapy, this service offers immediate care and qualified listening in situations of psychic urgency, without requiring prior appointments or formal referrals. Grounded in a qualitative approach and Analytical Psychology, the service has been offered for over a decade, shaped by the specificities of the territory, population served, and the attending psychologist. Users accessed care spontaneously and were seen on a walk-in basis, following order of arrival the same day. The experience demonstrated that this emergency service has established itself as a viable and humanized mental health care strategy within the public health system (SUS), promoting relief from psychic suffering, expanded self-awareness, and better understanding of relational dynamics, thus fostering reflective processes and recognition of personal desires. Secondary effects include reduced waiting lists, alleviation of anxiety among family members and professionals, and reflective engagement by other psychologists in the network, who revisited their clinical practices. The service differs from traditional models by not adhering to fixed, chronological time (Kronos), instead privileging significant, relational time (Kairós). It has proven effective in addressing grief, symbolic losses, relational crises, and internal conflicts, constituting a symbolic space of refuge and understanding of lived experiences. In conclusion, the psychological emergency service, by providing immediate and humanized care at the moment of demand, consolidates itself as a relevant alternative for mental health care in public health.