He really wants this one girl although he 100% knows she interacts with other guys, knows she doesn't like him, Plus the two won't work out. But he tries his best to stay oblivious to the truth.

One day he's on a plane and starts overthinking about her again and really wants to call her but he can't cause he's on a plane and has no Wi-Fi. He decided she's more important then possibly killing multiple people including himself. He turns off airplane mode and bad things start happening