Aim: Death is a natural part of life; not only does this imply the inevitability that people will pass away, but also the emotional compromise of the bereaved. Numerous literatures have shown the intense grief and devastation of the parents upon losing their child, however, availability of literatures regarding lived experiences by the eldest child who experienced parental death is limited. This gap in knowledge led us to conduct this phenomenological study that will unravel the essence behind the experiences of the eldest child who experienced parental death. Methods: A descriptive phenomenological study was conducted involving a total of 5 handpicked participants. A semi-structured interview was done, recorded and transcribed verbatim including non-verbal cues and clues. Following Colaizzi's method, we extracted participant's significant statements and organized the formalized meanings into clusters of themes. Results: The phenomenon "Call of Duty" was materialized in this study which describes the eldest child's experiences of parental death. Three emerge themes were identified that clearly explains the eldest child's experience towards the demise of their parent. First, protected by the safe haven characterized the participants' reliance to their parent before the death occurs. Second, skirmished with parental loss highlighted their painful experiences of death and grieving. Lastly, armored to face the future captured the participants' struggle after the loss; positivism dominated amidst difficulties. Conclusions: The essence of the eldest child's responses reflected the phenomenon "Call of Duty", captured on a military theme that described their lived experiences towards parental death. The participants' experiences of parental death had led them to the development of emotional and psychosocial maturity.