Complex sentence: Unbeknownst to them, they are being watched by mysterious forcesseason premiered on June 14,2013, while the rest of the episodes were released on Rooster Teeth's website on Mondays starting June 24,2013.
Split into simpler sentences: Unbeknownst to them, they are being watched by mysterious forces. The season premiered on June 14,2013, while the rest of the episodes were released on Rooster Teeth's website on Mondays starting June 24,2013.