Lee Seojun, witnessing his daughter Lee Seola transform into the malevolent final antagonist responsible for both his demise and the world's destruction, embarks on a mission to 'Change The Future.' Despite his past shortcomings as a father, Seojun awakens to find a young 5-year-old Seola in front of him. Determined to nurture her differently to prevent her descent into darkness, he strives to be the loving parent she never experienced. The stakes are high - failure could mean the catastrophic demise of the world.