Moon was in the daycare with solar, him and solar were working on an animatronic to protect lunar from eclipse. Of course lunar doesn’t even know eclipse is alive again, Unfortunately they will have to tell him at some point, he and solar had left sun at home alone with the cats their house is far from society but Sun texted him that there was someone knocking at the door.

"just stay there and don't answer the door sun."

moon reply to sun, while working with solar