Every family business owner faces a succession as their biggest challenge. If you are one of them, you most likely have to deal with a bitter fact: a third-generation curse, which is well-known worldwide. The writer, who passionate about family business perpetuation, was intrigued by why several companies made it through generations and why other companies failed. As part of his doctorate study, he researched Indonesian large family businesses to study the phenomenon. Classic grounded theory methodology is applied to sampling twenty-seven respondents from four large conglomerate groups. The findings are that the founders’ main concern is perpetuating their family business and maintaining family leadership into second and third generations, which they seek to achieve by Parenting to Equip, Harmonizing to Prosper, and Collaborating to Endure. He then formulates a Theory on Intergenerational Perpetuation of Large Family Businesses®, which comprise Nine Propositions, PHC Triangle®, and Seven Stepping Stones of Intergenerational Perpetuation and Simple Algorithm for Perpetuating®. This book is dedicated to all family business owners worldwide to prevent the myth from becoming reality.