As you can see king Bindusara favors his eldest son and spends more time with him and not much with his other sons.
I love you a lot son, I give you my blessings to be the best king, Aayushmaan Bhava Susim.
Thank you dad, I love you too, I will not let you down, I will make you proud!
All the brothers grew up..... now-
AAH, he slaps my head today, when he becomes king, he would not mind taking off my head! I have to do something about this
He seeked help of Ashoka and here is what Ashoka's response was.
Hmm....big brother has not done well, he is spoilt since is childhood, I agree with this plan, let's think more on it
Bindusara tells his subject to call Susim from Taxilla as it's his time to get coronated, but he brings in Ashoka, the king understood the plan and...
*breathes heavily* YOU TRAITOR!! HOW DARE YOU?!*reaches for sword but fails and dies*
Ashoka gets coronated
THE END
Susim got to know about this and was very furios, out of mind he challenged Ashoka and fell in to a trap and died with his army. Ashoka finally had no challengers