What the heck is going on here?

The ninja are fighting Garmadon and the Serpintine. Garmadon slips away an a portal opens up! The ninja get pulled in and someone follows them into a different world! How will they survive? Will they get back home? Who's the strange girl who seems to know all about them? How does she know? Why is she so random? Why am I asking questions still? Read and find out! KaixOC