Gu Dabai (Aarif Lee), a talented musician pursuing his musical dream in London, will be deported due to an unexpected visa crisis. Jin Tian (Bai Ke), who has already obtained a green card, has a sudden idea and tries to confuse the visa officer Watson (Rupert Graves), and Gu Dabai also has a love spark with his new neighbor Hermione (Zhang Rongrong). But things did not go as smoothly as imagined: the visa officer with a fiery eye pursued him relentlessly, Dabai's parents suddenly visited, Jin Tian also had an emotional crisis with his girlfriend... Various emergencies made this pair of "London drifting" brothers in a mess, and the little lies rolled into a big snowball. Between the visa and the truth, how will the brothers choose?