1) “Mayans M.C.” season-finale,10 p.m. FX; rerunning at 11:36 p.m. and 1:12 a.m. Rippling with macho energy – off-camera, as well as on – this has been a tough ride. Kurt Sutter, the co-creator and co-producer, was recently fired; he granted that his own hard-charging approach has been part of the problem. But “Mayans” remains, flaws and all, what we need – intense, involving TV. Now two wars loom: The Mayans against another biker club and EZ (shown here) and his brother against efforts to deport their dad.
2) “Little Mermaid Live,” 8-10 p.m. Tuesday, ABC. Now for the precise opposite of “Mayans” – a sweet story, with upbeat songs. Along with a studio audience, we’ll see the excellent, 1989 movie about the mermaid who wants to sample land and love. When it’s time for a song, the screen will come up and a live production number will begin. Auli’i Cravalho (“Moana”) sings the title role, with Queen Latifah as Ursula, Shaggy as Sebastian, John Stamos as the French chef and Graham Phillips as Prince Eric.
3) “The Resident,” 8 p.m., Fox. We finally get Fox back. When the World Series went a full seven games, the network lost two Tuesdays and Wednesdays. Now it’s back, starting here with airline troubles – a pilot with a drinking problem, a tough flight for Dr. Bell. Some of the hospital scene are cliché (a patient resisting treatment) or unlikely (mid-surgery sniping), but other scenes are excellent: Mina ponders fresh responsibility; The Raptor hesitantly considers meeting his birth mother.
4) “Empire,” 9 p.m., Fox. In its final season, this is going all-out soap opera. That’s clear at the start of the hour – an explosive flashforward, then a cemetery vow. Things stay heated as Lucious competes with his son over music smarts and with Cookie over control of their mansion. Stick around; late in the episode is a new and jolting version of how their record label started.
5) And more: At 8 p.m., CW’s “The Flash” focuses on Cisco, one of its best characters. With Barry and Iris on vacation, he faces quick crises, in a good episode. At 9, NBC’s “This is Us” sees Deja test the boundaries set by her adoptive parents. And ESPN has the four top-ranked college basketball teams – Kansas and Duke at 7 p.m. ET, Michigan State and Kentucky at about 9:30.