After a painful separation, Dean Winchester, the fearless hunter, and Castiel, the loyal angel, meet again under the starry sky. In "Unbreakable Ties", they face their own inner demons and seek the meaning of their unique connection. Together, they discover that no matter what challenges arise, their ties are stronger than fate. This is a story of friendship, love and redemption, which proves that, even on the darkest nights, the light of true friendship always shines.