Complex sentence: Federico takes his partner through a series of tests in order to confirm his abilities, and approach the tightening circle of underground chance games that will eventually lead them both and a female cop on their heels to a final showdown with Samuel Berg.
Split into simpler sentences: Federico takes his partner through a series of tests in order to confirm his abilities. In the process they approach the tightening circle of underground chance games that will eventually lead them both, and a female cop on their heels, to a final showdown with Samuel Berg.