Xu Ren is kidnapped and disappears into the most detailed prison ever, which has been completely built and is completely changed. Ray must track him because he is the most active person in his job. Here everyone tries to recover René without losses.
Instead of putting in exactly the same amount of effort and creating an original film, the men and women behind Escape Plan 2 were so risk-averse that they thought there's a bigger audience for new Escape Plan movies.
Stallone's here, kind of, but "Escape Plan 2" doesn't have much interest in his participation, going the easy-peasy B-movie route to cough up an inexpensive, easily marketable sequel that's led by actor Xiaoming Huang.