Accio and Manrico are siblings from a working-class family in 1960s Italy: older Manrico is handsome, charismatic, and loved by all, while younger Accio is sulky, hot-headed, and treats life as a battleground — much to his parents' chagrin. After the former is drawn into left-wing politics, Accio joins the fascists out of spite, but his flimsy beliefs are put to test when he falls for Manrico's like-minded girlfriend.

Roger, a straight-laced politician has big plans to propose to his dream girl at her family's lake house. But everything goes awry when he meets his potential brother-in-law Todd: a full-time camp counselor with a heart of gold and a wild sense of fun, pining to be Roger's best friend, and ultimately catapulting him into a series of unfortunate events. As Roger tries to take a stand amidst outrageous fishing excursions, propulsive water jetpacks and American history-themed musicals, he realizes that being a part of a new family may be more difficult than he'd thought.

Yaichi (Ryuta Sato) is a single father and he raises his elementary school aged daughter alone. One day, a foreign man named Mike (Baruto Kaito) visits him. Yaichi has an identical twin brother Ryoji, but Ryoji moved to Canada years ago. They have disconnected since that time. Mike introduces himself as the husband of Ryoji. They are a married gay couple. Yaichi is confused and doesn't know how to deal with Mike.