The Backup Plan is a popular back bling for the game Fortnite: Battle Royale and is given for free exclusively to players with Twitch Prime account. Just like all the other back blings, the Dark Matter does not provide any advantage or have any gameplay effect and is made purely for cosmetic.
The Backup plan is a military back-pack with a huge red bomb, with a fierce smiley face, strapped at the back. The backpack features a dark green camouflaged.
The Backup Plan Back Bling is a part of the Twitch Prime Pack which is given to players for free.
How to get it
The backpack comes in free with the cool Legendary outfit called Havoc, which can be obtained for free if you link your Epic account to your Twitch Prime. To redeem the items in the set, you must head to https://www.epicgames.com/fortnite/en-US/twitch-prime-pack and follow the instructions provided to link your Epic account with your Prime account.
Backup Plan high-quality PNG images with transparent background to use them as you wish (YouTube thumbnails, skin concept and so on).
Used in-game to Shop and Locker, credit to Epic Games.