Complex sentence: A day before Skynet's worldwide attack and escaping to a safe house, Sarah, Kyle, and Pops make final preparations to destroy Cyberdyne's Genisys mainframe and head toward Cyberdyne's headquarters with the T-3000 in close pursuit.
Split into simpler sentences: A day before Skynet's worldwide attack, Sarah, Kyle, and Pops escape to a safe house and make final preparations to destroy Cyberdyne's Genisys mainframe. They head toward Cyberdyne's headquarters with the T-3000 in close pursuit.