B1A4 "Solo Day"

B1A4 are on their second comeback of the year after releasing their first album and winter midtempo track, "Lonely" back in January.
"Solo Day" is in tune with the summer season, with uptempo production and whistling. It gives me B.A.P's "Where Are You? What Are You Doing?" mixed with something Japanese rock band The Pillows would do back in the 90s. It's actually pretty awesome. For the life of me, I don't understand the music video. There was a plot about a video game, aliens, partying and there were a lot of non-Asians. Was this filmed in California? Totally confused...