Charlie asks Alastor to take care of Lucifer while she's gone because Lucifer is in a child's body. But his personality remains the same. Because of that, Lucifer won't let Alastor take care of him easily. And another day in the evening, Lucifer got a wound on his knee because he fell from running and Alastor tried to dress the wound, but Lucifer refused to allow Alastor to heal his wounds and Alastor began to lose patience and he scolded Lucifer, but Lucifer didn't care