Complex sentence: After they bring him the gold, however, Mallick reveals that he wants to use the three sisters as the main attractions in a theme park, but his plans are ruined when the police arrive at his warehouse, following Randy's tip-off.
Split into simpler sentences: After they bring him the gold, however, Mallick reveals that he wants to use the three sisters as the main attractions in a theme park. But his plans are ruined when the police arrive at his warehouse, following Randy's tip-off.