21 A Sacrifice Worth Living For

Hawkeye has Cancer. He's going blind. Set years into the Avengers' future, the team, including their new members, are faced with Clint's own humanity. What lengths will they go to restore his eyesight? And why is Barton refusing all of their help? Something dark is hanging over their future and it takes the entry of an ancient race to bring them a choice. Live or Die? Summ. inside!