Poong Sang has dedicated his life to caring for and financially supporting his four younger siblings, as their parents were absent. His siblings include Jin Sang, Jung Sang, Hwa Sang, and We Sang. Despite being middle-aged, Poong Sang continues to put his siblings' needs first. Jin Sang seeks a chance to change his life, Jung Sang is a logical doctor, Hwa Sang struggles with an inferiority complex, and We Sang aspires to
