Alexios IV yayi tayin biyan duk bashin da ake bin Venetian , ya ba da maki 200,000 na azurfa ga 'yan Salibiyya, 10,000 ƙwararrun sojojin Byzantine don Crusade, kula da maƙiyi 500 a cikin ƙasa mai tsarki, sabis na sojojin ruwa na Byzantine don jigilar Sojojin Crusader. zuwaMasar , da kuma sanya Cocin Orthodox na Gabas a ƙarƙashin ikon Paparoma, idan za su tashi zuwa Byzantium kuma su hambarar da sarki Alexios III Angelos, ɗan'uwan Isaac II.Wannan tayin, mai gwada kasuwancin da ke da ƙarancin kuɗi, ya kai ga shugabannin Crusade a ranar 1 ga Janairu 1203 yayin da suke sanyi a Zara.Count Boniface ya yarda kuma Alexios IV ya dawo tare da Marquess don komawa cikin jirgin ruwa a Corfu bayan ya tashi daga Zara.Yawancin sauran jagororin 'yan ta'addan da suka samu kwarin guiwa da cin hanci daga Dandolo, daga karshe su ma suka amince da shirin.Duk da haka, an sami masu adawa.Renaud na Montmirail ya jagoranta, waɗanda suka ƙi shiga cikin shirin kai wa Constantinople hari suka tashi zuwa Siriya.Ragowar jirage masu saukar ungulu na jiragen yaki 60, jigilar dawakai 100, da manyan jiragen ruwa 50 (dukansu ma’aikata 10,000 ne na jirgin ruwan Venetia da ma’aikatan ruwa) suka yi tafiya a ƙarshen Afrilu 1203. Ƙari ga haka, an kawo injuna 300 a cikin jirgin.Da jin shawarar da suka yanke, Paparoma ya yi katanga tare da ba da oda a kan duk wani hari da aka kai wa Kiristoci sai dai idan suna kawo cikas ga yunkurin ‘Yan Salibiyya, amma bai yi Allah wadai da shirin ba.