In Chapter 3 of the Opus Legacy titled 'Double the Pleasure,' the story resumes after a hiatus where Gilgamesh, the founder, shares updates about his growing family, including the birth of twins and the challenges of parenthood. The chapter highlights the dynamics between Gil, his wife Yuki, and their four children as they navigate various family events, school achievements, and relationships. The narrative revolves around themes of love, family bonds, and personal growth against the backdrop of life in their Sims world.