Solar storm
From Tardis Wiki, the free Doctor Who reference
File:Solar storm wipes out the Bank of Karabraxos.jpg
The Bank of Karabraxos is wiped out by the solar storm. (TV: Time Heist)
A solar storm occurred on the planet which hosted the Bank of Karabraxos, the most secure bank in the universe. The Doctor received a phone call from an elderly and dying Madame Karabraxos, telling him about her many regrets and sending him and Clara Oswald on a mission to rescue The Teller and it's mate from the bank prior to the storm's arrival. (TV: Time Heist)
