Complex sentence: After Vintage's plans are thwarted, Keima starts seeing visions of a child who is somewhat familiar to him, and the goddesses send Keima and Elsie to the past with the task of helping her.
Split into simpler sentences: After Vintage's plans are thwarted, Keima starts seeing visions of a child who is somewhat familiar to him. The goddesses send Keima and Elsie to the past with the task of helping her.