Alex Löfström (Felix Herngren) is a 39-year-old dentist who moves back to his childhood home in posh Saltsjöbaden with his girlfriend Anna Svensson (Mia Skäringer).

Alex is reunited with his childhood friend Fredrik "Fredde" Schiller (Johan Rheborg), who lives in one of the town's fanciest houses with his wife Mikaela "Mickan" (Josephine Bornebusch) and their two children.

Ove Sundberg (Henrik Dorsin) is another one of Alex's childhood friends and is seen as the most annoying person in Saltsjöbaden.

"[6] Herngren has described Solsidan as a free-standing sequel to his films Vuxna människor and Varannan vecka,[7] and much of the series is inspired by events in his and his friend's lives.

[4] During filming, she commented that "we have so much fun all the time, so we have to struggle to avoid laughing [while recording scenes].

It was the fourth highest-watched series in Sweden that week, following Antikrundan, På spåret, and Mästarnas mästare.