The 2018 entry in the Eurovision Song Contest was promoted through performances in London, Amsterdam, Madrid and Lisbon as well as a 10-week anti-bullying campaign to raise money for the Diana Award.

San Marino performed fourth in the second semi-final, held on 10 May 2018, and placed 17th with 28 points, failing to qualify for the final.

[1] The nation's debut entry in the 2008 contest, "Complice" performed by Miodio, failed to qualify for the final and placed last in the semi-final it competed in.

The nation's next three entries, "Chain of Lights" performed by Anita Simoncini and Michele Perniola for 2015, "I Didn't Know" by Serhat for 2016 and "Spirit of the Night" by Monetta and Jimmie Wilson for 2017, did not qualify for the final.

[5] On 17 October 2017, in a press conference to the foreign press of Rome, SMRTV director general Carlo Romeo and Sammarinese Head of Delegation Alessandro Capicchioni announced the broadcaster's partnership with 1in360 to organise their selection process for the Eurovision Song Contest 2018.

[7][9][12] The jury panel for the shows consisted of Austrian representative in the Eurovision Song Contest 2016 Zoë Straub, Capicchioni, Slovak entrepreneur Ladislav Kossár and English songwriter Neon Hitch.

[10] For the final's jury panel, Neon Hitch was replaced by SMRTV's frequent Eurovision commentator and spokesperson John Kennedy O'Connor, after she was unable to appear due to poor weather conditions.

[19][20] After the list was released, all candidates attended a song writing camp in Vienna, Austria, where they prepared to perform the variety of styles and genres that would be expected of them as part of the process.

[7] Straub was added to the songwriting credits for all but two of the songs, while Jenifer Brening penned four entries as a singer-songwriter.

[24] The selected fan clubs consisted of those representing Germany, France, the United Kingdom, Ireland, Italy, Greece, Hungary, Malta, Belgium, the rest of the World and ESC Press.

Organisers elaborated that their intent was to make the selection process as inclusive as possible and some of the mechanisms to reduce fraud, such as requiring fans to pay a small amount of money to vote, would not have aligned with that goal.

[31][32] They went on to emphasise that the 2018 entry was set out to be what they described as an internet candidate, selected with "all the good and bad things that this entails" and that those who are not satisfied with the wildcard results still have the opportunity to vote accordingly in the live shows.

Eight acts (of the 1,050 submitted to 1in360) were eligible to be the third wildcard: Alessandra Busignani, Alibi, Simoncini, Fabrizio Valentini, Fiorella Giudi, Gianluigi Colucci, Irol and Jimmi JDKA.

They performed for a Eurovision party at London's Cafe de Paris on 6 April 2018,[46] followed by an appearance on 14 April in the annual Eurovision in Concert series, an event held at AFAS Live in Amsterdam, Netherlands that was staged to serve as a preview party for the year's entries.

[48] During the week of the contest, Jessika and Brening performed at the second annual ESC Bubble Party at EuroCafe in Lisbon – MoMe Nightclub on 9 May 2018.

[49] As "Who Are We" is described by the singers as a song about facing the difficulties of harassment and demeaning attitudes, the duo also staged a 10-week anti-bullying campaign, traveling Europe and meeting fans to raise money for charities in support of the cause.

[54] On 29 January 2018, an allocation draw was held at Lisbon City Hall which placed each country into one of the two semi-finals and determined which half of the show they would perform in.

[60] For the performance at the semi-final, Jessika and Brening were joined by fellow 1in360 entrant Basti Schmidt, who provided backing vocals.

The jury judged each entry based on: vocal capacity; the stage performance; the song's composition and originality; and the overall impression by the act.

No member of a national jury was permitted to be connected in any way to any of the competing acts in such a way that they cannot vote impartially and independently.