Tonight’s episode of Agents of S.H.I.E.L.D. was a big one, and if the promo below is anything to go by? Next week’s two-hour season two finale will be even bigger!

Here is the official synopsis for the two-hour season finale:

“S.O.S.,” Part One and Part Two – S.H.I.E.L.D. puts everything on the line to survive a war that blurs the line between friend and foe. Coulson and his team will be forced to make shocking sacrifices that will leave their relationships and their world changed forever, on the two-hour season finale of “Marvel’s Agents of S.H.I.E.L.D,” Tuesday, May 12(9:00-11:00 PM, ET) on the ABC Television Network.

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