“The Lego Ninjago Movie” (**1/2 out of four) was a lively animated action children’s story about the alienated son (voice of Dave Franco) of an evil warlord who seeks refuge from a kindly master (voiced by- who else?- Jackie Chan) and his fellow ninjas to destroy his father and seek his own identity in life. Lots of action keeps this moving along and should entertain young kids and families but it never fully detonates until the end. There are some surprising laughs and some striking and colorful animation as well but it overall rings hollow. About on par with the previous “Lego” movies.