Cersei Lannister better watch her back in Game of Thrones season seven.

According to a set report from the Toronto Sun, a scene in the new season features a major alliance discussing how best to get Cersei (Lena Headey) off the Iron Throne, where she found herself at the end of season six.

And if you don't want to know who, don't read on past the picture.

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Bear Grylls//Digital Spy

So it appears that Daenerys Targaryen (Emilia Clarke) quickly gets to work on dethroning Cersei when she arrives at her new home of Dragonstone.

Alongside her current allies Tyrion (Peter Dinklage) and Missandei (Nathalie Emmanuel), Daenerys meets with Theon Greyjoy (Alfie Allen), Yara Greyjoy (Gemma Whelan), Lady Olenna Tyrell (Diana Rigg) and Ellaria Sand (Indira Varma).

The people around the table shouldn't be such a surprise given that last season saw Daenerys meet with Yara and Theon, while Lady Olenna and Ellaria met to talk about teaming up with Daenerys.

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Bear Grylls//Digital Spy

Perhaps the bigger – and more worrying – secret from the set report is that there was a "massive dragon skull" on set.

That said, it was part of 40 dragon skulls of various sizes, so it might not mean that one of Daenerys's trusty dragons bites the dust, but rather that we could be paying a visit to the Red Keep cellars, or our characters may potentially come across some kind of dragon graveyard.

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Bear Grylls//Digital Spy

We'll have to wait until the "epic" season seven hits Sky Atlantic in the UK and HBO in the US next month to find out exactly what the skulls are for.

preview for Game of Thrones season 7 trailer
From: Digital Spy