Asuron's proposition

Maa Parvati has prepared her son Kartikeya for the war with the mighty Tarkasur. Kartikeya comes to heaven with the army of devatas as the 'Senapati' to face the demon. Tarkasur sends his son Tarakaksha to meet Kartikeya on the battlefield. Tarakaksha gives a proposal that the demons have no idea of getting involved in a war as they want peace with the devatas. Lord Indra attacks the demon army as the army of Tarkasur runs back to heaven to initiate their plan. The demons catch all the devatas and the army in their 'maaya' as they enter heaven, how will Kartikeya manage to save his army?