Complex sentence: However, Kenneth, Kenji's only son, makes out with a girl in a bathroom stall as the girl's grandfather enters; chaos then ensues as the old man chases Kenneth to the reception hall.
Split into simpler sentences: However, Kenneth, Kenji's only son, makes out with a girl in a bathroom stall. The stall opens as the girl's grandfather enters; chaos then ensues as he chases Kenneth to the reception hall.