Whats your main?
I found others thread
Fire main 22,4k Power
Lightning main 21,5 Power
Earth main 18k Power

Bro that was the hardest plot in my life i couldnt 3 star it for years i did it with 27k power .

Years, mate? :'(

Should i just quit the game instead?

80 frags of the newly-nerfed Tobi just ain't worth all these aneurisms while doing this instance.

I used this team it should work - http://forum.naruto.oasgames.com/en/forum.php?mod=viewthread&tid=6173&highlight=life%2Bthreatening%2Bbattle

But it doesn't affect your ability to get the tobi. You only need to complete all instances to get him, 3 stars all is for the 90 coupons.

I don't even know at what power I finished the thing, I think I came back to it like 4 levels later thou...

I used Danzo Iruka Hinata with fire main, and i 3 stared it when i was power 22k.

I was L80 and like 35k power before I could beat as a fire I believe I used my 9tail team for fast hard damage iruka tenten anko

Srr, i thought you have to get full BP for Tobi. All is good then.

I believe you guys are thinking of plot 8, plot 7 with Life threatening has Tsunade as a reward for clearing the chapter and the coupons are a reward for clearing with full marks. some of the players I know just beat the chapter first to get Tsunade then come back later for the sealed area when they have enough power and a good formation. I would suggest someone who can spam clones to take all the explosion damage. That's only my thought though. Personally I still need more power to pass it on my alt account I had cleared once with full marks lv 77 and 24k power with a clone spam team and 2 interrupters.

I already have Tsunade i want the coupons.

Then I as I said I don't know what to tell ya it will obviously take more power then what you currently have or you can try checking other threads like these:

http://forum.naruto.oasgames.com/en/forum.php?mod=viewthread&tid=6173&highlight=life%2Bthreatening%2Bbattle

http://forum.naruto.oasgames.com/en/forum.php?mod=viewthread&tid=6612&page=1#pid48008

well there's my input if that doesn't help wait and get more power try farming in the eight inner gates you'd be surprised the difference it makes.

This was tough for me too but you have to increase strenrh and have alot of shadow clones at your leisure.

Thanks for all the help everybody :)

Use chiyo, rly helped, just keep her safe.

no i am only 13k lightning main and i passed it easy