Complex sentence: Dorbickmon was able to capture all the members of Xros Heart in Taiki's absence, however Taiki, Kiriha and Nene manage to rescue them before their planned execution.
Split into simpler sentences: Dorbickmon was able to capture all the members of Xros Heart in Taiki's absence. However, Taiki, Kiriha, and Nene manage to rescue them before their planned execution.