Home and Away have teased that two characters could be killed off in the impending explosion, but there are seven names that have been put in the firing line.
The tragedy will occur after a furious fight between Andy Barrett and reformed bad boy Tank Snelgrove results in them knocking over canisters and exposing live wires.
The majority of Summer Bay's residents will be attending the hospital fundraiser when the blast happens, and its consequences will be felt far and wide.
Roo Stewart has been confirmed to be one of the more seriously injured - she will be found unconscious after the blast with severe injuries.
Fans will have to tune in to see if Roo pulls through, but TV Week has reported that it will certainly be touch and go for Alf's beloved daughter.
Teens Maddy Osborne and Oscar MacGuire will also find themselves in horrifying danger and will be amongst those missing after the disaster hits. By the time help reaches them, it is clear they are in serious trouble. Although Nate does his best to help them, it becomes clear that he is being stretched to his very limits.
If that wasn't worrying enough, Oscar's desperate situation also endangers a stubborn Hannah as she refuses medical treatment due to her concerns for her injured nephew and the more seriously harmed.
Having received a nasty bump on the head, Hannah tries to convince everyone she is fine - but her refusal to be treated could have devastating repercussions.
Newlyweds Nate Cooper and Ricky Sharpe will be amongst those caught up in the drama, but whilst the doctor manages to walk away with a bump on his head, the same can't be said for his wife.
Realising that Ricky is trapped in one of the caravans, Nate has to act fast in order to get her to safety. However, fans know that Bonnie Sveen has already filmed her final scenes on the show, so could she be one of the unlucky victims?
Digital Spy