Kings and Generals animated historical animated documentary series on the Byzantine-Crusader-Bulgarian Wars, as well as the Fourth Crusade and the Sack of Constantinople, fragmentation, and restoration of the Eastern Roman Empire and Frankokratia concludes with the aftermath of the battle of Klokotnica (https://youtu.be/UiKngdrDiaM), as the Bulgarian Asen and the Nicean Palaiologos dynasties fight over the emperorship, which leads to a number of battles, including Constantinople in 1241, Pelagonia in 1259 and Constantinople again in 126s, and will learn how Michael VIII Palaiologos retook Constantinople and restored the Byzantine rule.