Sally ventures into Beast World as a tiny white mouse, bound to the Offspring System to chase her deepest desire. The ancient Dragon Lineage hasn't seen fresh bloodline in millennia, and she's about to change everything. With each offspring bearing the mark of legendary dragons, Sally discovers the staggering value of her choices—five hundred million points for a single bloodline achievement. As she navigates a world where genetics mean power and offspring determine destiny, Sally must master the system's mysteries to rise from insignificant rodent to a force reshaping the very foundations of Beast World's hierarchy.