for those who didn't read the last Captain Britain miniseries (which I read some months ago,so I may not have all ther details right) ....
It began with most of the Captain Britain Corps being slaughtered by some mechanical monstrosities,apparently led by an insane Roma.A then-powerless Brian Braddock led a group of allies,including his wife Meggan,to Otherworld in order to stop "Roma" from conquering the entire multiverse by using the Amulet of Right & the SWord of Might together.Brian managed to defeat & recruit the sword's defender & encountered another sentient computer using a hologram of his dead father who gave him some vital info and restored his powers & costume.Despite their best efforts,Brian & his friends & wife were defeated by the true villain-the solid-light hologram of the Mastermind computer,who was revealed to have been suffering from a variant of Ultron Syndrome. Fortunately,as Mastermind was unworthy to wield the Sword's power,it destroyed him.Brian became the Monarch of Otherworld soon after.