King Calvin and King Mark celebrate Mark's birthday in a uniquely kinky way. Calvin, the dominant one, has Mark in chastity, his bulge prominently on display. He teases Mark with a close-up inspection, running his fingers along the outline of Mark's trapped cock. Mark's whimpers of frustration and pleasure fill the room as Calvin toys with him, a cruel smile playing on his lips. Calvin then decides to make Mark's birthday even more memorable, subjecting him to a intense ball-busting session, leaving Mark gasping and begging for more.