On Christmas Eve, when Walter chooses work over spending quality time with his friends, he falls down the stairs and hits his head. As he lays unconscious, he enters a dream world where Team Scorpion never existed and he meets his guardian angel.

A solar storm knocks out power in Los Angeles, and Team Scorpion must help a teen pilot and his girlfriend who are lost over the Pacific without navigation or radio contact. Also, during the crisis, Walter must look after a group of Ralph's classmates, and Cabe tries to tell Allie finally that he loves her.