One last suggestion:
Episode VII
THE FORCE AWAKENSLuke Skywalker has vanished. In his absence, the sinister FIRST ORDER has risen from the ashes of the Empire.
Failing to convince the New Republic of this emerging threat, General Leia Organa mobilizes a brave RESISTANCE as the First Order prepares a secret weapon that will secure their return to power.
Desperate for her brother’s help, Leia has sent her most trusted pilot on a daring mission to Jakku, where a clue has been discovered to Luke’s whereabouts…
Best one yet. I’d replace ‘prepares a secret weapon’ with ‘completes a secret weapon’, implying that (1) its threat looms over the plot, and (2) that it’s only recently been completed, so unlikely to be known yet.