After a period of negotiations, the famous action star Arnold Schwarzenegger joined his colleague Sylvester Stallone in "The Tomb" movie co-starring together which will be filmed after couple of days.The funny thing is that Schwarzenegger announced his decision from his bed of sickness as He was at the hospital to operate a shoulder surgery after the massive effort he made in his recent movies, where he found his colleague Sylvester Stallone for the same reason.On his official page on Twitter, Schwarzenegger posted his photo with Stallone in the hospital and he wrote "Stallone is also making medical check.The movie is expected to be filmed next spring. It revolves around a Prison Engineer Specialist who was unjustly imprisoned in one of the buildings of his own design. However, he decides to escape with his fellows.After a long decade of competition between Stallone and Schwarzenegger the finally cooperate in The Expendables" movie which will expose its second part next August before the exposing of their 3rd movie "The Tomb.